Free fork of NotProton: Windows Steam games in Mac Steam, on CodeWeavers' Wine and Apple's Game Porting Toolkit
Steam Play for macOS
Apache Spark - A unified analytics engine for large-scale data processing
♞ lichess.org: the forever free, adless and open source chess server ♞
Open-source code analysis platform for C/C++/Java/Binary/Javascript/Python/Kotlin based on code property graphs. Discord https://discord.gg/vv4MH284Hc
Open-source high-performance RISC-V processor
Cortex: a Powerful Observable Analysis and Active Response Engine
Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3
Apache Kyuubi is a distributed and multi-tenant gateway to provide serverless SQL on data warehouses and lakehouses.
Code Property Graph: specification, query language, and utilities
XiangShanLab is the open-source XiangShan ecosystem's entry layer — a learning, practice, and collaboration hub spanning the RISC-V processor core and its specialized domains, making high-performance processor design learnable, doable, and participable, and welcoming collaborators from academia and industry to join real open-source development.
sbt, the interactive build tool
turtles, patches, and links for kids, teachers, and scientists
Scala language server with rich IDE features 🚀
Agentic and LLM Programming in Scala
USTC YeXiHu Team NSCSCC 2026 LA32R out-of-order processor core in Chisel. 中国科学技术大学也西湖队龙芯杯参赛项目。
ZIO — A type-safe, composable library for async and concurrent programming in Scala
The pure asynchronous runtime for Scala
Asynchronous, Reactive Programming for Scala and Scala.js.
An open source RESTful API platform for banks that supports Open Banking, XS2A, PSD2 and Open Finance through access to accounts, transactions, counterparties, payments, entitlements and metadata - plus a host of internal banking and management APIs.
Optics library for Scala
A data access library for Scala + Postgres.
Rapid development of self-documenting APIs
Distributed Prometheus time series database
Protocol buffer compiler for Scala.
A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs.
GraphFrames is a package for Apache Spark which provides DataFrame-based Graphs
GPGPU processor supporting RISCV-V extension, developed with Chisel HDL
Lightweight real-time big data streaming engine over Apache Pekko
Low-code tool for automating actions on real time data | Stream processing for the users.
The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
A fault tolerant, protocol-agnostic RPC system
Principled Functional Programming in Scala
State of the Art Natural Language Processing
Compositional, streaming I/O library for Scala
Functional JDBC layer for Scala.
Facebook's React on Scala.JS
MLeap: Deploy ML Pipelines to Production
GeoTrellis is a geographic data processing engine for high performance applications.
Scala library for boilerplate-free, type-safe data transformations
:robot: A bot that helps you keep your projects up-to-date
An asynchronous programming facility for Scala
Library to read, analyze, transform and generate Scala programs
Functional GraphQL library for Scala
An open protocol for secure data sharing
Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool.
Compiler plugin for making type lambdas (type projections) easier to write
Expressive types for Spark.
Refactoring and linting tool for Scala
Modify deeply nested case class fields
Simple, expressive, and safe UI library for Scala.js
This repository contains the development code for sparkMeasure, an Apache Spark performance analysis and troubleshooting library. It simplifies collecting, aggregating, and exporting Spark task/stage metrics, and is designed for practical use by developers and data engineers in interactive analysis, testing, and production monitoring workflows.
Easy, fast, transparent generic derivation of typeclass instances
Chess API written in scala. Immutable and free of side effects.
OS-Lib is a simple, flexible, high-performance Scala interface to common OS filesystem and subprocess APIs
Plugin for sbt to create Eclipse project definitions
💱 Trading application written in Scala 3 that showcases an Event-Driven Architecture (EDA) and Functional Programming (FP)
The code examples used in Programming Scala, 2nd and 3rd Editions (O'Reilly)
Productivity-oriented collection of lightweight fancy stuff for Scala toolchain
Eff monad for cats - https://atnos-org.github.io/eff