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.

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

ZIO Streams provides a high-level API that abstracts the mechanism of reading and writing operations using data sources and destinations.

zio-test-sbt

Low-level AWS wrapper for ZIO

zio-mock

Low-level AWS wrapper for ZIO

mock-test

ZIO integration with Reactive Streams with conversions from zio.stream.Stream to org.reactivestreams.Publisher and from zio.stream.Sink to org.reactivestreams.Subscriber.

Fast, secure JSON library with tight ZIO integration.

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.