Junit is the best know of all Java unit testing frameworks, which enables developers to automate the testing of their own Java code. Junit.org is the home of Junit with references to the latest framework for download as well as articles and documentation. The download link references the sourceforge.net pages where the actual downloads are housed.

A PHP Unit Testing framework, including support for SSL, forms, frames, proxies and basic authentication. The site includes articles, tutorials on Test Driven Development and how to write automated test cases.

An interesting concept for testing, in particular automated regression testing, is that each test has dependencies. The dependency could be data, in which case a tool like DBUnint could be used or other tests that create the required data need to be executed first. This simple concept can be documented with DepUnit, to save you reinventing the wheel.

Continuous testing builds on the automated developer support in Eclipse to make it even easier to keep your Java code well-tested, if you have a JUnit test suite. With continuous testing enabled, as you edit your code, Eclipse runs your tests quietly in the background, and notifies you if any of them fail or cause errors.

This tool is listed with other Junit related tools as it can be run with Junit and it adds features such as enhanced reporting, configurable runpath and a categorization model to facilitate reuse (called recipe file).

TestNG is a separate development from Junit, but is based on the same principles. The creator of TestNG cites a number of problems with Junit that are solved with TestNG, this aspect of TestNG’s history are explained on the website.