Discover Scala

1

lila

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

🔥🔥🔥

2

bfg-repo-cleaner

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

📣

3

the-algorithm

Source code for Twitter's Recommendation Algorithm

📣

4

spark

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

📣

5

mlscript

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

📣

6

magnum

A 'new look' for database access in Scala

📣

7

elasticmq

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

⬆️

8

delta

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

⬆️

9

apalache

APALACHE: symbolic model checker for TLA+ and Quint

⬆️

10

openwhisk

Apache OpenWhisk is an open source serverless cloud platform

⬆️

11

joern

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

⬆️

12

akka

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

⬆️

13

enso

Hybrid visual and textual functional programming.

⬆️

14

playframework

The Community Maintained High Velocity Web Framework For Java and Scala.

⬆️

15

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

⬆️

16

tasty-interpreter

Reference interpreter for TASTy, the Scala 3 interchange format

⬆️

17

manifesto

⬆️

18

metals

Scala language server with rich IDE features 🚀

⬆️

19

circe

Yet another JSON library for Scala

⬆️

20

moulin

Build multi-projects with Scala CLI

⬆️

21

kaitai_struct_compiler

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

⬆️

22

TheHive

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

⬆️

23

scalajs-wasm-game-of-life

Conway's Game of Life using experimental Scala.js WebAssembly backend

⬆️

24

scalachess

Chess API written in scala. Immutable and free of side effects.

⬆️

25

flix

The Flix Programming Language

⬆️

26

dotty-macro-examples

Various tasks solved via metaprogramming in Dotty

⬆️

27

deequ

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

⬆️

28

scalameta

Library to read, analyze, transform and generate Scala programs

⬆️

29

rocket-chip

Rocket Chip Generator

⬆️

30

fpinscala

Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala"

⬆️

31

snowflake

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

⬆️

32

tasty-query

⬆️

33

bootzooka

Simple project to quickly start developing a Scala-based microservice or web application, without the need to write login, user registration etc.

⬆️

34

pureconfig

A boilerplate-free library for loading configuration files

⬆️

35

zio-cli-demo

A simple demo application to show zio-cli in action

⬆️

36

macwire

Zero-cost, compile-time, type-safe dependency injection library.

⬆️

37

SpinalHDL

Scala based HDL

⬆️

38

header

Header automation and linting 🎉

⬆️

39

spring-boot-scala-example

An example SpringBoot app using Scala

⬆️

40

watchlistarr

Customizable sync of Plex Watchlist to Sonarr/Radarr

⬆️

41

iron

Strong type constraints for Scala

⬆️

42

cats-effect-cps

An incubator project for async/await syntax support for Cats Effect

⬆️

43

Raphtory

Raphtory: A Distributed Temporal Graph Processing System

⬆️

44

gluten

Gluten: Plugin to Double SparkSQL's Performance

⬆️

45

sbt-scalafix

sbt plugin for Scalafix

⬆️

46

essent

high-performance RTL simulator

⬆️

47

slick

Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala

⬆️

48

chisel

Chisel: A Modern Hardware Design Language

⬆️

49

scala-ts

🔧 Scala datamodel transpiler

⬆️

50

kyo

Algebraic effects for Scala 3

⬆️

51

hkd4s

Higher Kinded Data for Scala 3

⬆️

52

incubator-streampark

StreamPark, Make stream processing easier! easy-to-use streaming application development framework and operation platform

⬆️

53

os-lib

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

⬆️

54

tapir

Rapid development of self-documenting APIs

⬆️

55

effekt

A language with lexical effect handlers and lightweight effect polymorphism

⬆️

56

VexiiRiscv

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

⬆️

57

gatling

Modern Load Testing as Code

⬆️

58

XiangShan

Open-source high-performance RISC-V processor

⬆️

59

http4s

A minimal, idiomatic Scala interface for HTTP

⬆️

60

predictionio

PredictionIO, a machine learning server for developers and ML engineers.

⬆️

61

chipyard

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

⬆️

62

scala-js-env-selenium

Scala.js environment

⬆️

63

sbt-bundlemon

sbt plugin for monitoring Scala.js artifact size

⬆️

64

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.

⬆️

65

chiselucl

ChiselUCL: Utilities for generating UCLID5 models from Chisel and FIRRTL descriptions

⬆️

66

keratin-authn-scala

Client library for keratin/authn-server

⬆️

67

fs2

Compositional, streaming I/O library for Scala

⬆️

68

akka-jwt

Library for jwt authentication with akka

⬆️

69

falstar

Fast Falsification of Hybrid Systems using Probabilistically Adaptive Input

⬆️

70

tyrian

Elm-inspired Scala UI library.

⬆️

71

zio-prelude

A lightweight, distinctly Scala take on functional abstractions, with tight ZIO integration

⬆️

72

zio-protoquill

Quill for Scala 3

⬆️

73

lila-ws

Lichess' websocket server

⬆️

74

scala-multifile-adt

Tutorial of how to split a Scala ADT into multiple files

⬆️

75

GrokConstructor

Semi-automatic incremental construction and debugging of regular expressions for grok to parse logfiles for logstash http://logstash.net/ . Deployed at http://grokconstructor.appspot.com/ .

⬆️

76

paiges

an implementation of Wadler's a prettier printer

⬆️

77

openstrat

Cross Platform Scala 2d graphics (but 3d compatible), basic geometry, maps, Earth maps, hex-tiling and strategy library(s).

⬆️

78

incubator-pekko

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

⬆️

79

PPrint

Pretty-printing value, types and type-signatures in Scala

⬆️

80

hmda-platform

The HMDA Submission backend applications.

⬆️

81

LaminarSAPUI5Bindings

Laminar bindings for the SAP ui5 web components library

⬆️

82

cascade-artifacts

Artifacts for Cascade: CPU Fuzzing via Intricate Program Generation (USENIX Security 2024)

⬆️

83

scalatest-embedded-kafka

A library that provides an in-memory Kafka instance to run your tests against.

⬆️

84

testchipip

⬆️

85

CMAK

CMAK is a tool for managing Apache Kafka clusters

⬆️

86

sbt

sbt, the interactive build tool

⬆️

87

scala-js-dom

Statically typed DOM API for Scala.js

⬆️

88

pekko-http-json

Integrate some of the best JSON libs in Scala with Pekko HTTP

⬆️

89

indigo

An FP game engine for Scala.

⬆️

90

Vale

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

⬆️

91

scalaxb

scalaxb is an XML data binding tool for Scala.

⬆️

92

cats-parse

A parsing library for the cats ecosystem

⬆️

93

spark-testing-base

Base classes to use when writing tests with Spark

⬆️

94

sttp

The Scala HTTP client you always wanted!

⬆️

95

incubator-pekko-connectors

Apache Pekko Connectors is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Apache Pekko.

⬆️

96

azure-databricks-streaming-analytics

Stream processing with Azure Databricks

⬆️

97

breeze

Breeze is a numerical processing library for Scala.

⬆️

98

otel4s

An OpenTelemetry library for Scala based on Cats-Effect

⬆️

99

zio-lmdb

Lightning Memory Database (LMDB) for scala ZIO

⬆️

100

scala-99

Scala 99 Problems implemented in a pure functional way

⬆️