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Discover the top trending Scala repositories and projects on Github. Explore the latest trends in Scala development.

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the-algorithm

Source code for Twitter's Recommendation Algorithm

spark

Apache Spark - A unified analytics engine for large-scale data processing

delta

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs

bfg-repo-cleaner

Removes large or troublesome blobs like git-filter-branch does, but faster. And written in Scala

lila

♞ lichess.org: the forever free, adless and open source chess server ♞

flix

The Flix Programming Language

S3HyperSync

S3HyperSync is a high-performance, memory-efficient, and cost-effective tool for synchronizing files between S3-compatible storage services.

XiangShan

Open-source high-performance RISC-V processor

joern

Open-source code analysis platform for C/C++/Java/Binary/Javascript/Python/Kotlin based on code property graphs. Discord https://discord.gg/vv4MH284Hc

scalag

Multi-platform GPGPU computations with Scala, seamlessly 🚀

magnum

A 'new look' for database access in Scala

akka

Build highly concurrent, distributed, and resilient message-driven applications on the JVM

elasticmq

In-memory message queue with an Amazon SQS-compatible interface. Runs stand-alone or embedded.

gluten

Gluten: Plugin to Double SparkSQL's Performance

hkd4s

Higher Kinded Data for Scala 3

enso

Hybrid visual and textual functional programming.

nak

a command line tool and a web app for dealing with nostr entities

mill

Mill is a fast JVM build tool that supports Java and Scala. Mill aims to make your project’s build process performant, maintainable, and flexible

neotype

A friendly newtype library for Scala 3

zio

ZIO — A type-safe, composable library for async and concurrent programming in Scala

scala3

The Scala 3 compiler, also known as Dotty.

CMAK

CMAK is a tool for managing Apache Kafka clusters

Vale

Compiler for the Vale programming language - http://vale.dev/

TheHive

TheHive: a Scalable, Open Source and Free Security Incident Response Platform

deequ

Deequ is a library built on top of Apache Spark for defining "unit tests for data", which measure data quality in large datasets.

chisel

Chisel: A Modern Hardware Design Language

metals

Scala language server with rich IDE features 🚀

incubator-pekko

Build highly concurrent, distributed, and resilient message-driven applications using Java/Scala

gatling

Modern Load Testing as Code

kaitai_struct_compiler

Kaitai Struct: compiler to translate .ksy => .cpp / .cs / .dot / .go / .java / .js / .lua / .nim / .php / .pm / .py / .rb

gitbucket

A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility

raise4s

Porting of the Raise DSL from the Arrow Kt Kotlin library

kyo

Algebraic effects for Scala 3

chipyard

An Agile RISC-V SoC Design Framework with in-order cores, out-of-order cores, accelerators, and more

snowflake

Snowflake is a network service for generating unique ID numbers at high scale with some simple guarantees.

pdffigures2

Given a scholarly PDF, extract figures, tables, captions, and section titles.

metarank

A low code Machine Learning personalized ranking service for articles, listings, search results, recommendations that boosts user engagement. A friendly Learn-to-Rank engine

cats-actors

Cats Actors framework for building apps which are reactive. Cats actors uses a conceptual actor model as a higher level abstraction for concurrency.

FiloDB

Distributed Prometheus time series database

doobie

Functional JDBC layer for Scala.

VexiiRiscv

Like VexRiscv, but, Harder, Better, Faster, Stronger

riscv-boom

SonicBOOM: The Berkeley Out-of-Order Machine

cats

Lightweight, modular, and extensible library for functional programming.

recheck

The trustworthy ReDoS checker

rocket-chip

Rocket Chip Generator

gears

A strawman for a low-level async library in Scala 3.

snowplow

The leader in Next-Generation Customer Data Infrastructure

tsumugi-spark

SparkConnect Server plugin and protobuf messages for Amazon Deequ Data Quality Engine.

codepropertygraph

Code Property Graph: specification, query language, and utilities

postgresql-to-sqlite

pg2sqlite is easy to use solution to create sqlite database from postgresql dump

Laminar

Simple, expressive, and safe UI library for Scala.js

os-lib

OS-Lib is a simple, flexible, high-performance Scala interface to common OS filesystem and subprocess APIs

Raphtory

Raphtory: A Distributed Temporal Graph Processing System

watchlistarr

Customizable sync of Plex Watchlist to Sonarr/Radarr

scala-with-cats

Source code for Scala with Cats

delta-sharing

An open protocol for secure data sharing

LogoRRR

A simple and straightforward log viewer that displays the events of interest in a clear and concise visual manner so that you can identify them faster.

cats-effect

The pure asynchronous runtime for Scala

apalache

APALACHE: symbolic model checker for TLA+ and Quint

iron

Strong type constraints for Scala

Vyxal

A code-golfing language experience that has aspects of traditional programming languages - terse, elegant, readable.

iskra

Typesafe wrapper for Apache Spark DataFrame API

scala-cli

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!)

t1

chronon

Chronon is a data platform for serving for AI/ML applications.

ostrich

An SMT Solver for string constraints

gemmini

Berkeley's Spatial Array Generator

geomesa

GeoMesa is a suite of tools for working with big geo-spatial data in a distributed fashion.

ifdef

`@ifdef` is an annotation that implements conditional compilation in Scala

pureconfig

A boilerplate-free library for loading configuration files

mlscript

The MLscript programming language. Functional and object-oriented; structurally typed and sound; with powerful type inference. Soon to have full interop with TypeScript!

atlas

In-memory dimensional time series database.

ldbc

ldbc is Pure functional JDBC layer with Cats Effect 3 and Scala 3.

build-server-protocol

Protocol for IDEs and build tools to communicate about compile, run, test, debug and more.

sbt

sbt, the interactive build tool

storch

GPU accelerated deep learning and numeric computing for Scala 3.

scio

A Scala API for Apache Beam and Google Cloud Dataflow.

difflicious

Scala library for readable diffs of values

effekt

A language with lexical effect handlers and lightweight effect polymorphism

sparkMeasure

This is the development repository for sparkMeasure, a tool for performance troubleshooting of Apache Spark workloads. It simplifies the collection and analysis of Spark task and stage metrics data.

zio-http

A next-generation Scala framework for building scalable, correct, and efficient HTTP clients and servers

zio-apache-parquet

ZIO-powered Apache Parquet library

sttp

The Scala HTTP client you always wanted!

sizegame

Compare binary sizes of canonical Hello World in 17 different languages

parsley

A fast and modern parser combinator library for Scala

scalafmt

Code formatter for Scala

lila-search

Keep elasticsearch threads out of your web facing app, kids

renku

Renku provides a platform and tools for reproducible and collaborative data analysis.

algebird

Abstract Algebra for Scala

quine

Quine • a streaming graph • https://quine.io • Discord: https://discord.gg/GMhd8TE4MR

eldarica

The Eldarica model checker

udash-core

Scala framework for building beautiful and maintainable web applications.

constellation

A Chisel RTL generator for network-on-chip interconnects

ops-mirror

Type class derivation for services, not data

wartremover

Flexible Scala code linting tool

scalding

A Scala API for Cascading

fs2-data

streaming data parsing and transformation library

eclair

A scala implementation of the Lightning Network.

YuQuan

A RISC-V core running Debian (and a LoongArch core running Linux).

scala-loci

A programming language for distributed applications

twitter

Scala, Java, Python

apache

Java, HTML, JavaScript

typelevel

Scala, Nix, Shell

scala

Scala, Shell, SCSS

twitter-archive

Scala, Java, JavaScript

akka

Scala, Java, CSS

sbt

Scala, Java, Shell

playframework

Scala, Java, CSS

prisma

TypeScript, JavaScript, Rust

lichess-org

Rust, TypeScript, Scala

softwaremill

Scala, Java, TypeScript

zio

Scala, JavaScript, TypeScript

yahoo

JavaScript, Java, Python

com-lihaoyi

rtyley

Java, Scala, Python

databricks

Python, Scala, HCL

gitbucket

Scala, Shell, Java

guardian

Scala, JavaScript, TypeScript

chipsalliance

Scala, Python, SystemVerilog

delta-io

Scala, Jupyter Notebook, MDX

snowplow

Scala, Shell, Go

enso-org

JavaScript, Rust, Scala

lhartikk

JavaScript, Java, Python

gatling

Scala, Java, Shell

ucb-bar

Scala, C, Python