akka-js/akka.js

Akka, for Scala.js

com-lihaoyi/utest

A simple testing framework for Scala

com-lihaoyi/sourcecode

Scala library providing "source" metadata to your program, similar to Python's __name__, C++'s __LINE__ or Ruby's __FILE__.

outr/scribe

The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.

outwatch/outwatch

The Functional and Reactive Web-Frontend Library for Scala.js

udashframework/udash-core

Scala framework for building beautiful and maintainable web applications.

xebia-functional/fetch

Simple & Efficient data access for Scala and Scala.js

com-lihaoyi/cask

Cask: a Scala HTTP micro-framework

typelevel/jawn

Jawn is for parsing jay-sawn (JSON)

kaitai-io/kaitai_struct_compiler

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

scoverage/scalac-scoverage-plugin

Scoverage Scala Code Coverage Core Libs

endpoints4s/endpoints4s

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

bot4s/telegram

Telegram Bot API Wrapper for Scala

vlovgr/ciris

Functional Configurations for Scala

typelevel/log4cats

Logging Tools For Interaction with cats-effect

lihaoyi/autowire

Macros for simple/safe RPCs between Scala applications, including ScalaJS/ScalaJVM

suzaku-io/boopickle

Binary serialization library for efficient network communication

tpolecat/atto

friendly little parsers

netlogo/netlogo

turtles, patches, and links for kids, teachers, and scientists

nrinaudo/kantan.csv

CSV handling library for Scala