Awesome Scala
- Algorithms and Data Structures
- Android
- Archives and Compression
- Artificial Intelligence (AI)
- Asset Management and Bundlers
- Asynchronous and Reactive Programming
- Audio and Music
- Authentication and Permissions
- Big Data
- Bioinformatics
- Build Tools
- CSV
- Caching
- Code Analysis
- Code Editors and Notebooks
- Code Formatting
- Code Generation
- Command Line Parsing
- Compilers
- Computer Science
- Computer Vision
- Configuration and Environment
- Configuration, Logging, Testing and Monitoring
- Cryptography and Hashing
- Data Binding and Validation
- Data Sources and Connectors
- Data Visualization
- Databases
- Dates and Time
- Dependency Injection
- Deployment, Virtualization and Cloud
- DevOps
- Development Tooling
- Distributed Computing
- Distributed Messaging Systems and Microservices
- Economy, Finance and Cryptocurrencies
- Emailing
- File Systems and Processes
- Forms and Validation
- Functional Programming and Category Theory
- Geometry, Geopositioning, Geospatial
- Graphical Interfaces and Game Development
- HTTP Servers and Clients
- Hardware and Emulators
- I18n
- Images, Audio and Video
- Indexing and Searching
- Internationalization
- JSON
- JavaScript
- Library Dependency Management
- Linting and Refactoring
- Logging
- Logic Programming and Type Constraints
- Markdown
- Mathematics, Finance, Data Science and Bioinformatics
- Miscellaneous Utils
- Mobile, Desktop and Game Development
- Natural Language Processing
- Network
- Numerical and Symbolic Computing
- Operating System, Hardware and Robotics
- Other Document Formats
- Other Tools
- Packaging and Publishing
- Parsing
- Performance and Monitoring
- Probability, Statistics and Machine Learning
- Programming Language Interfaces
- Sbt plugins
- Scala Language Extensions
- Schedulers
- Semantic Web
- Serialization
- Serverless
- Table of Contents
- Templating
- Testing
- Text Manipulation
- Text, Formats and Compression
- Third-Party APIs
- Time, Positions and Units of Measurement
- URLs and Routing
- Units of Measurement
- Version Management
- Virtualization and Containerization
- Web Development & Frameworks
- Web Frontend
- XML/HTML and DOM
- YAML
Awesome Scala
Algorithms and Data Structures
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All Algorithms implemented in Scala
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Bloom filter for Scala, the fastest for JVM
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A tool for data sampling, data generation, and data diffing
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Parallel collections standard library module for Scala 2.13+
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simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
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The standard Scala XML library
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Purely Functional Algorithms and Data Structures in Scala
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algorithms in scala
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TextTeaser is an automatic summarization algorithm.
Android
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Android client for Project Tox - Secure Peer to Peer Messaging
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gradle-android-scala-plugin adds scala language support to official gradle android plugin
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A modular functional UI language for Android
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An easy-to-use sbt plugin for working with all Android projects
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Scaloid makes your Android code easy to understand and maintain.
Archives and Compression
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Scala wrappers for Java's Swing API for desktop GUIs
Artificial Intelligence (AI)
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Typesafe, purely functional Computational Intelligence
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Community driven tutorial for CIlib
Asset Management and Bundlers
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sbt plugin to roll the Git history
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Support for sbt plugins that use JavaScript
Asynchronous and Reactive Programming
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Simple, expressive, and safe UI library for Scala.js
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RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences
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Build highly concurrent, distributed, and resilient message-driven applications on the JVM
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High-performance Arrow and Task in Scala
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Compositional, streaming I/O library for Scala
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Iteratees for Cats
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Single Page Applications running on the server side.
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Asynchronous, Reactive Programming for Scala and Scala.js.
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A scala extension for Project Reactor's Flux and Mono
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An asynchronous programming facility for Scala
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the Scala delimited continuations plugin and library
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Parallel collections standard library module for Scala 2.13+
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An experimental library for Functional Reactive Programming in Scala
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Client-server skeleton
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Scala framework for building beautiful and maintainable web applications.
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The wiki and issues for the vert-x3 organisation
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A small and effective event-handling library for Scala
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ZIO — A type-safe, composable library for async and concurrent programming in Scala
Audio and Music
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A computer music framework to describe, create and manage sound processes in the Scala programming language. Issue tracker: https://codeberg.org/sciss/SoundProcesses/issues
Authentication and Permissions
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An implementation of an OAuth2 server designed for mocking/testing
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Web & mobile client-side akka-http sessions, with optional JWT support
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Scala library to sign HTTP requests to AWS services.
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An authorization module for the Play framework
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Lightweight api management on top of a modern http reverse proxy
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Simple play module for authenticating against Google
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Security library for Play framework 2 in Java and Scala: OAuth, CAS, SAML, OpenID Connect, LDAP, JWT...
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Silhouette is an authentication library for Play Framework applications that supports several authentication methods, including OAuth1, OAuth2, OpenID, CAS, 2FA, TOTP, Credentials, Basic Authentication or custom authentication schemes.
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Play2.x Authentication and Authorization module
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OAuth 2.0 server-side implementation written in Scala
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A module that provides OAuth, OAuth2 and OpenID authentication for Play Framework applications
Big Data
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CPU and GPU-accelerated Machine Learning Library
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Spark library for easy MongoDB access
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The missing MatPlotLib for Scala + Spark
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A Scala kernel for Jupyter
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Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
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Breeze is a numerical processing library for Scala.
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Lightweight real-time big data streaming engine over Akka
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Scala library for accessing various file, batch systems, job schedulers and grid middlewares.
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Scalable genomic data analysis.
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A simplified, lightweight ETL Framework based on Apache Spark
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Spark DataFrames for earth observation data
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A Scala API for Cascading
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Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API.
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A Scala productivity framework for Hadoop.
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Scala DSL on top of Oozie XML
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Apache Spark - A unified analytics engine for large-scale data processing
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Deploy Spark cluster in an easy way.
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Executable Apache Spark Tools: Format Converter & SQL Processor
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Basic framework utilities to quickly start writing production ready Apache Spark applications
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Spark package to "plug" holes in data using SQL based rules ⚡️ 🔌
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Real Time Analytics and Data Pipelines based on Spark Streaming
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Streaming MapReduce with Scalding and Storm
Bioinformatics
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ADAM is a genomics analysis platform with specialized file formats built using Apache Avro, Apache Spark, and Apache Parquet. Apache 2 licensed.
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A scalable genome browser. Apache 2 licensed.
Build Tools
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Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool.
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sbt plugin to create a dependency graph for your project
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A git plugin for sbt
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sbt plugin to roll the Git history
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sbt-header is an sbt plugin for creating file headers, e.g. copyright headers
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"Trust no one, bench everything." - sbt plugin for JMH (Java Microbenchmark Harness)
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PGP plugin for sbt
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A release plugin for sbt
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sbt plugin for scoverage
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Site generation for sbt
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sbt plugin to create a unified Scaladoc or Javadoc API document across multiple subprojects.
CSV
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Scala Library for Reading Flat File Data (CSV/TSV/XLS/XLSX)
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CSV handling library for Scala
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CSV Reader/Writer for Scala
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CSV Data Source for Apache Spark 1.x
Caching
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Performant database access in Scala
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"Trust no one, bench everything." - sbt plugin for JMH (Java Microbenchmark Harness)
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sbt Native Packager
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Proguard sbt plugin
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SBT Plugin to create a "start" script to run the program
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Library for building sbt plugins for the web
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makes some Scala 2.13 APIs (primarily collections, also some others) available on 2.11 and 2.12, to aid cross-building
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Simple caching in Scala
Code Analysis
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Your daily code review tool
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Find potential bugs in your services with Diffy
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scalastyle
Code Editors and Notebooks
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A Scala kernel for Jupyter
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An interactive playground for Scala
Code Formatting
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Scalafmt SBT plugin
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Code formatter for Scala
Code Generation
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A simple library for creating complex neural networks
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Protocol buffer compiler for Scala.
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Scala testing library with actionable errors and extensible APIs
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An asynchronous programming facility for Scala
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makes some Scala 2.13 APIs (primarily collections, also some others) available on 2.11 and 2.12, to aid cross-building
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the Scala delimited continuations plugin and library
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simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
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The standard Scala XML library
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Generation of arbitrary case classes / ADTs instances with scalacheck and shapeless
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Refactoring and linting tool for Scala
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A Scala API for Apache Beam and Google Cloud Dataflow.
Command Line Parsing
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Automatic argonaut codec derivation with shapeless
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Scala CLI is a command-line tool to interact with the Scala language. It lets you compile, run, test, and package your Scala code (and more!)
Compilers
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A framework to create embedded Domain-Specific Languages in Scala
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The Scala 3 compiler, also known as Dotty.
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Static Analysis Compiler Plugin for Scala
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A compiler plug-in to control object lifetimes in Scala
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Scala.js, the Scala to JavaScript compiler
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Your favorite language gets closer to bare metal.
Computer Science
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Fast, distributed, secure AI for Big Data
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C4E, a JVM friendly library written in Scala for both local and distributed (Spark) Clustering.
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Scientific computing with N-dimensional arrays
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LoMRF is an open-source implementation of Markov Logic Networks
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Optimus is a mathematical programming library for Scala.
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A group of neural-network libraries for functional and mainstream languages
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Abstract Algebra for Scala
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Axle Domain Specific Language for Scientific Cloud Computing and Visualization
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Lightweight, modular, and extensible library for functional programming.
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Statically-checked string interpolation in Scala
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Functional JDBC layer for Scala.
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The Scala 3 compiler, also known as Dotty.
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FACTORIE is a toolkit for deployable probabilistic modeling, implemented as a software library in Scala. It provides its users with a succinct language for creating relational factor graphs, estimating parameters and performing inference.
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A dimensional analysis library based on dependent types
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Purely functional genetic algorithms for multi-objective optimisation
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ND4S: N-Dimensional Arrays for Scala. Scientific Computing a la Numpy. Based on ND4J.
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numsca is numpy for scala
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Workflow engine for exploration of simulation models using high throughput computing
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Fast, customizable, boilerplate-free pickling support for Scala
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Rings: efficient JVM library for polynomial rings
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The Scala interpreter is embedded in R and callbacks to R from the embedded interpreter are supported. Conversely, the R interpreter is embedded in Scala.
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SADDLE: Scala Data Library
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sbt, the interactive build tool
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Scala 2 compiler and standard library. For bugs, see scala/bug
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Scala.js, the Scala to JavaScript compiler
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Your favorite language gets closer to bare metal.
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Interactive and Reactive Data Science using Scala and Spark.
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SwiftLearner: Scala machine learning library
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TensorFlow API for the Scala Programming Language
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Statistics utilities for the JVM - in Scala!
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Scala Units of Measure Types
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Wonderful reusable code from Twitter
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Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.
Computer Vision
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Start using OpenCV in your JVM project in just 1 line, no separate compiling, installing OpenCV, or fussing with your system required
Configuration and Environment
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Yet another Typesafe config Scala wrapper powered by circe
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Simple Scala Config: Typesafe Config wrapped in a `Dynamic` blanket.
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The Scala HTTP client you always wanted!
Configuration, Logging, Testing and Monitoring
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Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client
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A testing tool for Scala and Java developers
Cryptography and Hashing
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Bitcoin Implementation in Scala
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Cryptographic primitives for Scala
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Type-safe general-cryptography library - https://jmcardon.github.io/tsec/
Data Binding and Validation
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Accord: A sane validation library for Scala
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Minimal, idiomatic, customizable validation Scala library.
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A micro data binding and validating framework, very easy to use and hack
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Scala library for boilerplate-free validation
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Scala.js facade for WebSQL/SQLite API
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If you don't agree with the data
Data Sources and Connectors
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Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise
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A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs.
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A Scala API for Apache Beam and Google Cloud Dataflow.
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Apache Spark - A unified analytics engine for large-scale data processing
Data Visualization
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The missing MatPlotLib for Scala + Spark
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The first and only true Functional Reactive Programming framework for Scala.
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ArangoDB client written in Scala
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The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
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Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop.
Databases
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Neo4j Scala library based on Anorm in the Play Framework
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Distributed Prometheus time series database
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Play 2 plugin for ReactiveCouchbase
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🍃 Non-blocking, Reactive MongoDB Driver for Scala
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Persistent and in-memory key-value storage engine for JVM that scales on a single machine.
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Abandoned: Pluggable persistence in Scala
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A replicated Akka Persistence journal backed by Apache Cassandra
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akka-persistence-gcp-datastore is a journal and snapshot store plugin for akka-persistence using google cloud firestore in datastore mode.
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The Anorm database library
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High performance data store solution
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Casbah is now officially end-of-life (EOL).
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Clickhouse Scala Client with Reactive Streams support
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The Couchbase Monorepo for JVM Clients: Java, Scala, io-core…
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A purely functional Scala client for CouchDB
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Dynamo DB Database Done Scala-way
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Scala etcd client implementing V3 APIs
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A distributed, fault-tolerant graph database
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Scala wrapper for Apache TinkerPop 3 Graph DSL
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Strong type constraints for Scala
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A Future-free Fs2 native pure FP Redis client
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A Persistence Framework for Scala and NoSQL
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Light-weight convenience wrapper around Lucene to simplify complex tasks and add Scala sugar.
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A Scala ORM library
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Memcached client for Scala
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Reactive type-safe Scala driver for SQL databases
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Neo4j Scala client using Akka-Http
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Scala lightweight, type-safe, asynchronous driver for neo4j
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Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise
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Async, Netty based, database drivers for PostgreSQL and MySQL written in Scala
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Idiomatic, typesafe, and reactive Scala client for Apache Pulsar
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[DISCONTINUED] Reactive type-safe Scala driver for Neo4J
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Non-blocking, Reactive Redis driver for Scala (with Sentinel support)
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Scala Driver for RethinkDB
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Salat is a simple serialization library for case classes.
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ActiveRecord-like ORM library for Scala
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Type-safe data migration tool for Slick, Git and beyond.
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scala SQL api
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Type-Safe framework for defining, modifying, and querying SQL databases
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A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs.
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Simpler DynamoDB access for Scala
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Non-blocking, ultra-fast Scala Redis client built on top of Akka IO, used in production at Livestream
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Scala + Druid: Scruid. A library that allows you to compose queries in Scala, and parse the result back into typesafe classes.
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Memcached client for Scala
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Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala
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Slick extensions for PostgreSQL
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A functional boilerplate-free Scala ORM
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A Scala DSL for talking with databases with minimum verbosity and maximum type safety
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Reactive MongoDB Driver for Scala
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Type-safe and Schema-safe Scala wrapper for Cassandra driver
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Compile-time Language Integrated Queries for Scala
Dates and Time
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A new Scala wrapper for Joda Time based on scala-time
Dependency Injection
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Essential Building Blocks for Scala
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Yet another Scala Dependency Injection Library
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Grafter is a library to configure and wire Scala applications
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Productivity-oriented collection of lightweight fancy stuff for Scala toolchain
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Lightweight and Nonintrusive Scala Dependency Injection Library
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The first and only true Functional Reactive Programming framework for Scala.
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Lightweight Scala Dependency Injection Library
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ArangoDB client written in Scala
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Scala classpath scanner
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The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
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Scala Uniquely Bound Classes Under Traits
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Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop.
Deployment, Virtualization and Cloud
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In-memory dimensional time series database.
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sbt project that packages the Scala distribution
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The enterprise-grade behavioral data engine (web, mobile, server-side, webhooks), running cloud-natively on AWS and GCP
Development Tooling
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Programmable, Typesafe Document Generation
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Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool.
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Yet another JSON library for Scala
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Codacy tool for Scalameta
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Dregex is a JVM library that implements a regular expression engine using deterministic finite automata (DFA). It supports some Perl-style features and yet retains linear matching time, and also offers set operations.
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Scala macro that generates ultra-fast string interpolators.
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Extremely fast string formatting
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A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility
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a command line tool to apply templates defined on GitHub
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Your shiny new Java/Scala build tool!
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Macro based print debugging. Locates debug statements in your IDE. Supports logging.
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🤖 A bot that helps you keep your Scala projects up-to-date
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Macro based print debugging. Locates log statements in your IDE.
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Scala2PlantUML generates PlantUML diagrams from Scala code.
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ScalaJS frontend router
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Library to read, analyze, transform and generate Scala programs
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Scala source code formatter
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Scala compiler plugin for static code analysis
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URL (de)construct. Withers.
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Flexible Scala code linting tool
Distributed Computing
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Enhances Akka with a safer alternative to "ask"
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A distributed tracing extension for Akka. Provides integration with Play framework, Spray and Akka HTTP.
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Akka, for Scala.js
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Automatically wrap Scala classes that return Futures with a Circuit Breaker
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Orchestrate microservice-based process flows
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Blindsight is a Scala logging API with DSL based structured logging, fluent logging, semantic logging, flow logging, and context aware logging.
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Breeze is a numerical processing library for Scala.
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[MIRROR] A Playframework BodyParser for scanning multipart file uploads with ClamAV
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A library for expressive and efficient service composition
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I/O and Microservice library for Scala
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Distributed NoSQL Database
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A fault tolerant, protocol-agnostic RPC system
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Fast, testable, Scala services built on TwitterServer and Finagle
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Library to register and lookup actors by names in an Akka cluster
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Kafka-based message queue
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A RPC framework leveraging Spark RPC module
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A purely functional library to build distributed and event-driven systems
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Minimal, type-safe RPC Scala library.
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A foundational framework for distributed programming.
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Principled Functional Programming in Scala
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Embeddable multi-Paxos For The JVM
Distributed Messaging Systems and Microservices
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Protocol buffer compiler for Scala.
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Build highly concurrent, distributed, and resilient message-driven applications on the JVM
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Akka gRPC
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The Streaming-first HTTP server/module of Akka
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Akka Management is a suite of tools for operating Akka Clusters.
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Reactive Microservices for the JVM
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Asynchronous, Reactive Programming for Scala and Scala.js.
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The Opinionated RabbitMQ Library for Scala and Akka
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sbt Native Packager
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Refactoring and linting tool for Scala
Economy, Finance and Cryptocurrencies
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Bitcoin Implementation in Scala
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Blockchain (smart contract) platform using CBC-Casper proof of stake + Rholang for concurrent execution.
File Systems and Processes
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Simple, safe and intuitive Scala I/O
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IO module for sbt
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A macro-based PEG parser generator for Scala 2.10+
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Yet another Scala lens macro
Forms and Validation
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The Play JSON library
Functional Programming and Category Theory
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REScala - distributed and reactive programming embedded in OO and FP programs.
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SynapseGrid is a framework for constructing dynamic low latency data flow systems.
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Desugaring scala `for` without implicit `withFilter`s
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Lightweight, modular, and extensible library for functional programming.
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Statically-checked string interpolation in Scala
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Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala"
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Iteratees for Cats
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Rapture
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A scala extension for Project Reactor's Flux and Mono
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Functional Reactive Programming for Scala
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An experimental library for Functional Reactive Programming in Scala
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Functional programming toolbox
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compile-time typechecked akka actors
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ZIO — A type-safe, composable library for async and concurrent programming in Scala
Geometry, Geopositioning, Geospatial
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A STAC/OGC API Features Web Service
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GeoTrellis is a geographic data processing engine for high performance applications.
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Scala and Spark library focused on reading OpenStreetMap Pbf files.
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RTree2D is a 2D immutable R-tree for ultra-fast nearest and intersection queries in plane and spherical coordinates
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LocationTech SFCurve is a Scala library for the creation, transformation, and querying of space-filling curves
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a scala library with primitives to build applications using the SpatioTemporal Asset Catalogs specification
Graphical Interfaces and Game Development
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A computer music framework to describe, create and manage sound processes in the Scala programming language. Issue tracker: https://codeberg.org/sciss/SoundProcesses/issues
HTTP Servers and Clients
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Unified Scala.js + Scala HTTP client API
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Add-ons to Akka Stream
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Functional GraphQL library for Scala
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Describe HTTP endpoints in Scala and derive clients, servers, and documentation
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Asynchronous Scala HTTP client using Finagle, Shapeless and Cats
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Implement fast, type-safe HTTP webservices for Finagle
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Fast, efficient, pure-functional, effect-free websocket, http and udp server, http client and telegram bot
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A minimal, idiomatic Scala interface for HTTP
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Manages installation, updating, downloading, launching, error reporting, and more for your application.
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An HTTP Server and Client library for Scala.
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Simple net test client/server for Netty and Scala lovers
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Scala wrapper for the Java AsyncHttpClient.
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A Scala port of the popular Python Requests HTTP client: flexible, intuitive, and straightforward to use.
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Statically typed DOM API for Scala.js
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Simple scala wrapper for HttpURLConnection. OAuth included.
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scalaxb is an XML data binding tool for Scala.
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Common REST API Scala/Scala.js components
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Declarative, type-safe web endpoints library
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A comfortable and fashionable way to have bi-directional conversations with modern web servers.
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A scala library to write Http apps.
Hardware and Emulators
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educational microarchitectures for risc-v isa
I18n
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Scala compiler plugin that acts like GNU xgettext command to extract i18n strings in Scala source code files to Gettext .po file
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GNU Gettext .po file loader for Scala
Images, Audio and Video
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Chromaprint/AcoustID audio fingerprinting for the JVM
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A Scala sound synthesis library based on SuperCollider.
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Image comparison by hash codes
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Scalable Image Analysis and Shape Modelling
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Provides immutable datatypes for working with bits and bytes
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Java, Scala and Kotlin image processing library
Indexing and Searching
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⚡️ A fully-featured and blazing-fast Scala API client to interact with Algolia.
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Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client
Internationalization
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A Java 8 compatibility kit for Scala.
JSON
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Fast JSON parser/generator for Scala
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Purely functional JSON parser and library in scala.
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A scala diff/patch library for Json
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Add-on module for Jackson (https://github.com/FasterXML/jackson) to support Scala-specific datatypes
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Jawn is for parsing jay-sawn (JSON)
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Persist-Json, a Fast Json Parser Written in Scala
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JSON library
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Scala macros for compile-time generation of safe and ultra-fast JSON codecs
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A scala library for flexible JSON interfaces
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The Play JSON library
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play-json-zipper
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ABANDONED Pure Scala serialization library with annotations
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sbt plugin that generates Scala case classes for easy, statically typed and implicit access of JSON data e.g. from API responses
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Compile-time JSON marshaling and abstraction for Scala, Scala Native and Scala.js
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Scala support library for integrating the JSON API spec with Spray, Play! or Circe
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Better JSON support for Scala
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A lightweight, clean and simple JSON implementation in Scala
JavaScript
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js.scala: JavaScript as an embedded DSL in Scala
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Production ready React wrapper for Scala.js - composable lifecycle - no memoization, no macros, no implicits.
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Facebook's React on Scala.JS
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Scala.js facades for core React.js APIs, components and hooks
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Scala.js facades for react-native and expo APIs and components
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Write Scala.js React apps just like you would in ES6
Library Dependency Management
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A replicated Akka Persistence journal backed by Apache Cassandra
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Asynchronously writes journal and snapshot entries to configured JDBC databases so that Akka Actors can recover state
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Pure Scala Artifact Fetching
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🤖 A bot that helps you keep your Scala projects up-to-date
Linting and Refactoring
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Scalafmt SBT plugin
-
Code formatter for Scala
Logic Programming and Type Constraints
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DSL in Scala for Constraint Solving with Z3 SMT Solver
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The Leon system for verification, synthesis, repair
Markdown
-
Simple, safe and intuitive Scala I/O
Mathematics, Finance, Data Science and Bioinformatics
-
Scala library for boilerplate-free, type-safe data transformations
-
Implementation of SCP-010.
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The Scala Package Index
-
ScalaFX simplifies creation of JavaFX-based user interfaces in Scala
-
Simple scala wrapper for HttpURLConnection. OAuth included.
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property based testing library for Scala
-
Principled, fast, typeclass derivation.
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An interactive playground for Scala
Miscellaneous Utils
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Pretty-printing value, types and type-signatures in Scala
-
A neat little tool to build presentations using the Scala REPL
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A non-blocking Yahoo Finance Scala client
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Simple project to quickly start developing a Scala-based microservice or web application, without the need to write login, user registration etc.
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Learn Cellular Automata through generative art
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Work with systemd.time like calendar events in Scala
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The pure asynchronous runtime for Scala
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Deploying scala libraries to central for dummies
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Visually compare Scala data structures with out of the box support for arbitrary case classes.
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Easy Config makes Scala application configuration extremely easy. It reads configuration from the environment or command line arguments.
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A scala implementation of the Lightning Network.
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Emil is a library for dealing with E-Mail in Scala.
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Crowd-sourced code mentorship. Practice having thoughtful conversations about code.
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Scala/Scala.js library for manipulating Fancy Ansi colored strings
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source and examples to Functional Programming for Mortals with Scalaz
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Code for the book "Get Programming with Scala" (Manning)
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This API is a wrapper for the google java libraries. Currently mapping Admin Directory, Drive, and Calendar.
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A lean, functional library for Google Cloud Services in Scala
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learn-by-doing course/tutorial for functional programming on scala
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Mailgun API implementation in Scala
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Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media.
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Miniboxing is a program transformation that improves the performance of Scala generics when used with primitive types. It can speed up generic collections by factors between 1.5x and 22x, while maintaining bytecode duplication to a minimum. You can easily add miniboxing to your sbt project:
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A chess library that runs on the server (Scala) and on the browser (ScalaJS).
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Simplified wrapper to create PDFs in Scala
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Fast, customizable, boilerplate-free pickling support for Scala
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Swagger spec generator for play framework
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Powerful framework providing many useful utilities and features on top of the Scala language.
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A boilerplate-free library for loading configuration files
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A simple static site generator written in Scala
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Scala libraries and tooling utilizing the Java Debugger Interface.
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The easy way to learn Scala.
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An object pool for Scala
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Remote shell access via SSH for your Scala applications
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A library-based Software Transactional Memory (STM) for Scala, coupled with transactional sets and maps
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Basic tools and utilities for Scala projects
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Lessons in the Fundamentals of Scala
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Generic framework for development of domain-specific compilers in Scala
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A scala chassis to get your applications and services bootstrapped quickly
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boilerplate-free typed settings generation in Scala
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Example code to accompany shapeless-guide.
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scala、spark使用过程中，各种测试用例以及相关资料整理
Mobile, Desktop and Game Development
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ScalaFX simplifies creation of JavaFX-based user interfaces in Scala
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🚝 "Scala on Rails" - A full-stack web app framework for rapid development in Scala
Natural Language Processing
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A simple library for creating complex neural networks
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XiaoMi Natural Language Processing Toolkits
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Stanford CoreNLP wrapper for Apache Spark
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State of the Art Natural Language Processing
Network
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RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences
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Play Framework
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Scala wrappers for Java's Swing API for desktop GUIs
Numerical and Symbolic Computing
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Chalk is a natural language processing library.
Operating System, Hardware and Robotics
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OS-Lib is a simple, flexible, high-performance Scala interface to common OS filesystem and subprocess APIs
Other Document Formats
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Avro schema generation and serialization / deserialization for Scala
Other Tools
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Programmable, Typesafe Document Generation
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Scurses, terminal drawing API for Scala, and Onions, a Scurses framework for easy terminal UI
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Dregex is a JVM library that implements a regular expression engine using deterministic finite automata (DFA). It supports some Perl-style features and yet retains linear matching time, and also offers set operations.
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Scala macro that generates ultra-fast string interpolators.
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Extremely fast string formatting
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A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility
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Scala language server with rich IDE features 🚀
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Your shiny new Java/Scala build tool!
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Macro based print debugging. Locates debug statements in your IDE. Supports logging.
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obsolete; visit https://github.com/scalacenter/scalafix instead
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Macro based print debugging. Locates log statements in your IDE.
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Scoverage Scala Code Coverage Core Libs
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Benchmarks: write in Scala or JS, run in your browser. Live demo:
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scalastyle
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Scala compiler plugin for static code analysis
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Scala API Search
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Time Series library for Scala
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Flexible Scala code linting tool
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Given a scholarly PDF, extract figures, tables, captions, and section titles.
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A PDF module for the Play framework
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Create PDFs from Scala using plain old HTML and CSS. Uses wkhtmltopdf on the back-end which renders HTML using Webkit.
Packaging and Publishing
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fresh packages delivered from your sbt console
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I know this because build.sbt knows this.
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sbt plugin to create a dependency graph for your project
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sbt-header is an sbt plugin for creating file headers, e.g. copyright headers
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PGP plugin for sbt
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Site generation for sbt
Parsing
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friendly little parsers
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A parsing library for the cats ecosystem
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Yet another JSON library for Scala
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Command Line Interface Scala Toolkit
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A composable command-line parser for Scala.
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Writing Fast Parsers Fast in Scala
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Kaitai Struct: declarative language to generate binary data parsers in C++ / C# / Go / Java / JavaScript / Lua / Nim / Perl / PHP / Python / Ruby
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A macro-based PEG parser generator for Scala 2.10+
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LL(1) parser combinators in Scala
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a simple Scala CLI parsing library
Performance and Monitoring
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Distributed Tracing, Metrics and Context Propagation for applications running on the JVM
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The scala API for Dropwizard's Metrics.
Probability, Statistics and Machine Learning
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Scala Library/REPL for Machine Learning Research
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A Scala wrapper for Deeplearning4j, inspired by Keras. Scala + DL + Spark + GPUs
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Simple and Distributed Machine Learning
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TransmogrifAI (pronounced trăns-mŏgˈrə-fī) is an AutoML library for building modular, reusable, strongly typed machine learning workflows on Apache Spark with minimal hand-tuning
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A machine learning package built for humans.
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*breeze-viz has moved back to the main breeze repo*
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Chalk is a natural language processing library.
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🍰 doddle-model: machine learning in Scala.
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The complete graph data science platform
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MLeap: Deploy ML Pipelines to Production
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The Nak Machine Learning Library
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Functional DevOps with Scala and Kubernetes
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PredictionIO, a machine learning server for developers and ML engineers.
Programming Language Interfaces
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Lift Framework
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Play Framework
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A Java 8 compatibility kit for Scala.
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Tiny Scala high-performance, async web framework, inspired by Sinatra
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A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable
Sbt plugins
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Pure Scala Artifact Fetching
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Typechecked markdown documentation for Scala
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A tool for catching binary incompatibility in Scala
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An Sbt plugin that fills apiMappings for common Scala libraries.
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A port of apidocjs https://apidocjs.com to sbt, to document REST Api
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I know this because build.sbt knows this.
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sbt plugin to automate Sonatype releases from GitHub Actions
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SBT Plugin for OWASP DependencyCheck. Monitor your dependencies and report if there are any publicly known vulnerabilities (e.g. CVEs). 🌈
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SBT deploy plugin
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Create Docker images directly from sbt
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Doctest for scala
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Plugin for sbt to create Eclipse project definitions
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Use git-describe as a version and run git commands inside SBT shell
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Sbt plugin for rendering Scala objects to files. And more!
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SBT plugin for tweaking various IDE settings
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An sbt plugin to create awesome microsites for your project
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A sbt plugin for creating distributable Scala packages.
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An SBT plugin for dangerously fast development turnaround in Scala
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A Sbt plugin that configures source mapping for Scala.js projects hosted on Github
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sbt plugin for Scalafmt
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sbt plugin for scoverage
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A sbt plugin for publishing Scala/Java projects to the Maven central.
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sbt plugin to create a unified Scaladoc or Javadoc API document across multiple subprojects.
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sbt plugin that can check Maven and Ivy repositories for dependency updates
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Good advice for Scala compiler errors
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better implicit errors for scala
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doc/tutorial generator for scala
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Servlet support for sbt
Scala Language Extensions
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Scala Scripting
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Easy way to create Free Monad using Scala macros with first-class Intellij support.
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Optics library for Scala
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Desugaring scala `for` without implicit `withFilter`s
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Cassovary is a simple big graph processing library for the JVM
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The pure asynchronous runtime for Scala
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cats transformer type classes.
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Scala library for boilerplate-free, type-safe data transformations
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A JSR-310 port of nscala_time
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Functional JDBC layer for Scala.
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A macro library that converts native imperative syntax to scalaz's monadic expressions
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Eff monad for cats - https://atnos-org.github.io/eff
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A library that toggles Scala code at compile-time, like #if in C/C++
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A type-safe, reflection-free, powerful enumeration implementation for Scala with exhaustive pattern match warnings and helpful integrations.
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Practical effect composition library based on abstract wrapping type and the free monad
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A cohesive & pragmatic framework of FP centric Scala libraries
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A mini Scala utility library
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A common interface for different Id types
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Compiler plugin for making type lambdas (type projections) easier to write
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Lamma schedule generator for Scala is a professional schedule generation library for periodic schedules like fixed income coupon payment, equity deravitive fixing date generation etc.
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Large off-heap arrays and mmap files for Scala and Java
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Fancy logging library for Scala
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High-performance SLF4J wrapper for Scala.
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Scala Logging Library
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Scala language server with rich IDE features 🚀
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A new Scala wrapper for Joda Time based on scala-time
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Tiny publish subscribe library
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A simple scala DSL to allow clean and monadic style for Play! Actions
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Modify deeply nested case class fields
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Refinement types for Scala
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Yet another Scala lens macro
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Scala framework for efficient sequential and data-parallel collections -
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Convenient and performant logging library for Scala wrapping SLF4J.
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Labeled records for Scala based on structural refinement types and macros.
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Library to read, analyze, transform and generate Scala programs
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A testing tool for Scala and Java developers
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Generic programming for Scala
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First class syntax support for type classes in Scala
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Squid – type-safe metaprogramming and compilation framework for Scala
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Asynchronous programming in fully featured Scala syntax.
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tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android
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Wonderful reusable code from Twitter
Schedulers
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Akka gRPC
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The Streaming-first HTTP server/module of Akka
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Akka Management is a suite of tools for operating Akka Clusters.
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Quartz Extension and utilities for cron-style scheduling in Akka
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Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
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Fault tolerant job scheduler for Mesos which handles dependencies and ISO8601 based schedules
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A fault tolerant, protocol-agnostic RPC system
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Lamma schedule generator for Scala is a professional schedule generation library for periodic schedules like fixed income coupon payment, equity deravitive fixing date generation etc.
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Scala 2 compiler and standard library. For bugs, see scala/bug
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Principled Functional Programming in Scala
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A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable
Semantic Web
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Banana RDF
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RDF stream processing framework in Scala
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A Scala DSL for programming with the OWL API.
Serialization
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the scala protocol buffers (protobuf) compiler
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Scala extensions for the Kryo serialization library
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MessagePack serializer implementation for Scala / msgpack.org[Scala]
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Rapture
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Scala combinator library for working with binary data
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A Thrift parser/generator
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uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala
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validation api extracted from play
Serverless
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Apache OpenWhisk is an open source serverless cloud platform
Table of Contents
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fs2 utilities to interact with AWS
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Minimal, type-safe RPC Scala library.
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A foundational framework for distributed programming.
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A port of apidocjs https://apidocjs.com to sbt, to document REST Api
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A purely functional Cassandra client built using ZIO on top of the Datastax Java Driver
Templating
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Reactive data-binding for Scala
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A lightweight, logicless templating engine, written in Scala and inspired by Mustache
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Typesafe HTML templates in pure Scala. Static site generator included! Play and ScalaJS support!
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ScalaTags is a small XML/HTML construction library for Scala.
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Scalate is a Scala based template engine which supports HAML, Mustache and JSP, Erb and Velocity style syntaxes.
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Twirl is Play's default template engine
Testing
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Functional testing for Scala.
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Native Scala mocking framework
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Integration between cats-effect and test frameworks
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Scala DSL for testing HTTP JSON API
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Randomised, zero-boilerplate object builders
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Flexible law checking for Scala
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⚡️Lightning-fast linter for .env files. Written in Rust 🦀
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In-memory message queue with an Amazon SQS-compatible interface. Runs stand-alone or embedded.
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Native non-blocking client for ZooKeeper with Finagle
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Scala combinator library for building Finagle HTTP services
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Compositional, streaming I/O library for Scala
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Modern Load Testing as Code
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The super light testing library for Scala and Scala.js
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Mockito for Scala language
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Scala testing library with actionable errors and extensible APIs
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Random Data Generation and/or Property Testing in Scala & Scala.JS.
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Performant database access in Scala
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Property-based testing for Scala
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Microbenchmarking and performance regression testing framework for the JVM platform.
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property based testing library for Scala
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Connect a Scala REPL to running JVM processes without any prior setup
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Software Specifications for Scala
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Mutation testing for Scala
-
Scala Test-State.
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The project repository has moved to https://github.com/testcontainers/testcontainers-scala
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A simple testing framework for Scala
Text Manipulation
-
Visually compare Scala data structures with out of the box support for arbitrary case classes.
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The easiest way to use Unicode Emoji in Scala🎉✨
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Scala/Scala.js library for manipulating Fancy Ansi colored strings
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A little text processing library for Scala.
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Efficient diffing in Scala
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Myers diff algorithm in Scala
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A fuzzy matching string distance library for Scala and Java that includes Levenshtein distance, Jaro distance, Jaro-Winkler distance, Dice coefficient, N-Gram similarity, Cosine similarity, Jaccard similarity, Longest common subsequence, Hamming distance, and more..
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🎯 String metrics and phonetic algorithms for Scala (e.g. Dice/Sorensen, Hamming, Jaccard, Jaro, Jaro-Winkler, Levenshtein, Metaphone, N-Gram, NYSIIS, Overlap, Ratcliff/Obershelp, Refined NYSIIS, Refined Soundex, Soundex, Weighted Levenshtein).
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A way to show data in tabular form
Text, Formats and Compression
-
Avro schema generation and serialization / deserialization for Scala
-
Scala extensions for the Kryo serialization library
-
Scala combinator library for working with binary data
-
A lightweight, clean and simple JSON implementation in Scala
Third-Party APIs
-
The Scala HTTP client you always wanted!
Time, Positions and Units of Measurement
-
Experimental project to lay out basic algebra type classes
-
Spire's macros for zero-cost operator enrichment
-
Powerful new number types and numeric abstractions for Scala.
-
The Scala API for Quantities, Units of Measure and Dimensional Analysis
URLs and Routing
-
Reactive Microservices for the JVM
Units of Measurement
-
Experimental project to lay out basic algebra type classes
-
Spire's macros for zero-cost operator enrichment
-
Powerful new number types and numeric abstractions for Scala.
-
The Scala API for Quantities, Units of Measure and Dimensional Analysis
Version Management
-
sbt, the interactive build tool
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A git plugin for sbt
-
A release plugin for sbt
Virtualization and Containerization
-
Modern Load Testing as Code
-
Deploy and manage containers (including Docker) on top of Apache Mesos at scale.
Web Development & Frameworks
-
A JVM written in Scala
-
A lightweight Web 3.0 framework for Scala, featuring a purely asynchronous architecture, extremely high-performance, massive scalability, high usability, and a functional, composable design.
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A lightweight framework for writing REST services in Scala.
-
I/O and Microservice library for Scala
-
Fast, testable, Scala services built on TwitterServer and Finagle
-
Scala combinator library for building Finagle HTTP services
-
Lift Framework
-
A minimal, idiomatic Scala interface for HTTP
-
A module for the Play Framework to build highly modular applications
-
Async lightweight Scala web framework
-
A simple FRP library and a web UI framework built on it
-
Scala GraphQL implementation
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Library for building sbt plugins for the web
-
Statically typed DOM API for Scala.js
-
Scala.js environment
-
Scala.js implementation for java.time in JDK8
-
Tiny Scala high-performance, async web framework, inspired by Sinatra
-
🚝 "Scala on Rails" - A full-stack web app framework for rapid development in Scala
-
A Scala web server powered by Netty networking and AKKA processing.
-
Suzaku web UI framework for Scala
-
A toolkit for servicing HTTP requests in Scala
-
Async and clustered Scala web framework and HTTP(S) server
-
Empty Xitrum project skeleton, like the one created by "rails new"
Web Frontend
-
The Guardian DotCom.
XML/HTML and DOM
-
Reactive data-binding for Scala
-
Typesafe HTML templates in pure Scala. Static site generator included! Play and ScalaJS support!
-
Tiny DOM binding library for Scala.js
-
A Scala library for scraping content from HTML pages
-
ScalaTags is a small XML/HTML construction library for Scala.
-
XML Streaming for Scala including FS2/cats support
YAML
-
YAML parser for circe using SnakeYAML
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Scala wrapper for SnakeYAML