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

Lightweight, modular, and extensible library for functional programming.

Compositional, streaming I/O library for Scala

The pure asynchronous runtime for Scala

Functional JDBC layer for Scala.

Property-based testing for Scala

Powerful new number types and numeric abstractions for Scala.

A data access library for Scala + Postgres.

🔍 Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client

A JVM written in Scala

A testing tool for Scala and Java developers

Functional GraphQL library for Scala

Compiler plugin for making type lambdas (type projections) easier to write

Expressive types for Spark.

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

Scala macros for compile-time generation of safe and ultra-fast JSON codecs + circe booster

Slick Plugin for Play

sbt plugin that can check Maven and Ivy repositories for dependency updates

Software Specifications for Scala

Monitor Kafka Consumer Group Latency with Kafka Lag Exporter

Docker containers for testing in scala

Productivity-oriented collection of lightweight fancy stuff for Scala toolchain

Data structures for pure functional programming in Scala

Twirl is Play's default template engine

Automatic type class derivation for Cats

A sbt plugin for creating distributable Scala packages.

Usage examples and benchmarks between Scalaz and Cats (w/ Haskell ground-truth).

Site and E-book Generator and Customizable Text Markup Transformer for sbt, Scala and Scala.js

Jawn is for parsing jay-sawn (JSON)

Logging Tools For Interaction with cats-effect