JUnit and NUnit are open source unit testing frameworks; the former for Java applications, the latter for .Net programs.

Applying the latest technologies in Reinforcement Learning, Diffblue Cover autonomously writes unit tests locally and in CI for Java/Kotlin applications – 250x faster than a human developer ...

Agitar’s support for exhaustive Java unit testing makes it easier for QA teams to do their work, since they can integrate and system test software modules that have been tested to really work".