β lichess.org: the forever free, adless and open source chess server β
Code Property Graph: specification, query language, and utilities
Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3
turtles, patches, and links for kids, teachers, and scientists
A data access library for Scala + Postgres.
Rapid development of self-documenting APIs
ZIO β A type-safe, composable library for async and concurrent programming in Scala
Functional JDBC layer for Scala.
Asynchronous, Reactive Programming for Scala and Scala.js.
Optics library for Scala
Library to read, analyze, transform and generate Scala programs
The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
Agentic and LLM Programming in Scala
Principled Functional Programming in Scala
Generic programming for Scala
Compositional, streaming I/O library for Scala
Compiler for the Vale programming language - http://vale.dev/
Scala library for boilerplate-free, type-safe data transformations
An asynchronous programming facility for Scala
Functional GraphQL library for Scala
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
Easy, fast, transparent generic derivation of typeclass instances
Chess API written in scala. Immutable and free of side effects.
π± 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)
Eff monad for cats - https://atnos-org.github.io/eff
Data structures for pure functional programming in Scala
Strong type constraints for Scala
:shopping_cart: The Shopping Cart application developed in the book "Practical FP in Scala: A hands-on approach"
Purely functional JSON parser and library in scala.
Functional programming toolbox
Lightweight, modular, and extensible library for functional programming.
Facebook's React on Scala.JS