pure4s/logger4s

Purely functional Logger for Scala

barambani/http4s-extend

Type classes, syntax and instances to help integrating http4s based api with 3rd party dependencies

lorandszakacs/sprout

Opaque type encoding for convenient new types, and boilerplate minimization of integration with 3rd party libraries like circe, http4s, doobie, skunk, etc.

sagifogel/proptics

Profunctor optics and lenses library for Scala

kevin-lee/effectie

A Tool for FP Effect Libraries

pure4s/uuid4s

Purely functional UUID's for Scala

iravid/play-json-cats

cats typeclass instances for play-json

tek/cattrix

http request and codahale metrics abstraction

thatscalaguy/circe-jq

Run jq filter on circe json objects.

taig/circe-validation

Use cats Validated to create (Accumulating) circe Decoders

trace4cats/trace4cats-sttp

Integration for Trace4Cats and Sttp/Tapir

dragisak/monocle-cats

Monocle Lenses and Cats State

regadas/scio-cats

leverage cats type classes and data types in scio pipelines

geirolz/app-toolkit

A small toolkit to build functional apps with managed resources

kubukoz/catharsis

Utilities for cats-effect that don't really fit in the upstream.

iolog4s/iolog4s

Pure logging library for cats-effect

fthomas/status-page

A microlibrary for creating simple status pages

lhns/munit-tagless-final

Integration library for MUnit and any effect type via cats-effect

al333z/anti-test

A DSL for BDD, leveraging Functional Programming techniques.

tek/xpct

monadic expectations