java.time API implementation in Scala and Scala.js

ZIO is a Type-safe, composable asynchronous and concurrent programming for Scala. ZIO lets developers quickly build applications that are highly scalable, testable, robust, resilient, resource-safe, efficient, and observable.

Core classes for Circe, a JSON library for Scala developed with a focus on performance.

ZIO Test is Scala library for writing functional tests with support for Resources, Effects, Property-Based Testing, Aspects, etc.

Automatic codec derivation for Circe (based on Shapeless)

zio-test-sbt

Core http4s library for servers and clients

Fast, secure JSON library with tight ZIO integration.

jsoniter-scala-core

java.time API implementation in Scala and Scala.js

zio-mock