Rich and fluent assertions for testing in Java

Core package for the JUnit Jupiter test engine.

TestNG is a testing framework inspired from JUnit and NUnit but introducing some new functionalities that make it more powerful and easier to use. It supports test configured by annotations, data-driven testing, parametric tests, etc.

A thin layer on top of JUnit 4 to allow running vintage tests (based on JUnit 3.8 and JUnit 4) with the JUnit Platform launcher infrastructure.

Aggregator of the Hibernate Validator modules.

Hibernate's Jakarta Validation reference implementation.

An annotation processor for generating type-safe bean mappers

Module "junit-platform-engine" of JUnit

Valkey and Redis Java client, Real-Time Data Platform. Sync/Async/RxJava/Reactive API.

Various utilities for accessing internals of a class.

Drools :: Compiler