alphaTab is a cross platform music notation and guitar tablature rendering library.

Open source guitar tablature editor

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

ZIO Path

Неофициальное приложение Яндекс Музыка для MacOS

GeoTrellis is a geographic data processing engine for high performance applications.

Functional GraphQL library for Scala

Functional programming toolbox

Scala testing library with actionable errors and extensible APIs

Functional Telegram Bot API for Scala

Telegramium or F[ Tg ] - pure functional Telegram Bot API implementation for Scala.

Dotty plays

STM monad for cats-effect

Example telegram bot implementation using fs2 and http4s client (no akka)

A data access library for Scala + Postgres.

An implementation of the java pet store using FP techniques in scala

Library of utilities for tagless final encoded algebras

First class syntax support for type classes in Scala

Bartosz Milewski's 'Category Theory for Programmers' unofficial PDF and LaTeX source

Describe HTTP endpoints in Scala and derive clients, servers, and documentation

Embeddable Lisp-Like Scripting

Experiments with sequent calculi

Ergo blockchain explorer backend

The pure asynchronous runtime for Scala

Example of reactive REST service written on akka-http with slick

scala things

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

Public bulletin board implementation