java.time API implementation in Scala and Scala.js

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

zio-mock

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

tapir-core

ZIO integrates with Typelevel libraries by providing an instance of Concurrent, Temporal and Async for Task as required, for instance, by fs2, doobie and http4s.

ZIO Prelude is an alternative approach to functional abstractions in Scala, which throws out the classic functor hierarchy in favor of a modular algebraic approach that is smaller, easier to understand and teach, and more expressive.

ZIO Logging is the official logging library for ZIO 2 applications, with integrations for common logging backends.