atry/fastring

Extremely fast string formatting

dwickern/scala-nameof

Get the name of an variable, function, class member, or type as a string--at compile-time!

softwaremill/scala-common

Tiny independent libraries with a single purpose, often a single class

julienrf/scalm

Elm-inspired Scala library for writing web user interfaces

hmil/roshttp

Unified Scala.js + Scala HTTP client API

cquiroz/scala-java-time

Implementation of the `java.time` API in scala. Especially useful for scala.js

scodec/scodec-bits

Provides immutable datatypes for working with bits and bytes

non/chain

Simple, efficient wrapper for fast concatenation/iteration.

thangiee/freasy-monad

Easy way to create Free Monad using Scala macros with first-class Intellij support.

com-lihaoyi/castor

Castor is a lightweight, typed Actor library for Scala and Scala.js

alonsodomin/cron4s

Cross-platform CRON expression parsing for Scala

lloydmeta/diesel

Boilerplate-free, zero-overhead Tagless Final / typed-final / Finally Tagless DSLs in Scala

ekrich/sconfig

Scala configuration library supporting HOCON for Scala, Java, Scala.js, and Scala Native

sisioh/scala-dddbase

Scala Library for Domain Driven-Design

sparsetech/pine

Functional HTML5 and XML library for the Scala platform

scala/scala-collection-contrib

community-contributed additions to the Scala 2.13 collections

spaced/scala-js-d3

d3 facade types for Scala.js

orkestra-tech/orkestra

Functional DevOps with Scala and Kubernetes

alexarchambault/argonaut-shapeless

Automatic argonaut codec derivation with shapeless