The PHP Unit Testing framework.
Library that provides collection, processing, and rendering functionality for PHP code coverage information.
Symfony PHPUnit Bridge
Utility class for timing
Wrapper around PHP's tokenizer extension.
FilterIterator implementation that filters files based on a list of suffixes.
Simple template engine.
Mock Object library for PHPUnit
Nette Tester: enjoyable unit testing in PHP with code coverage reporter.
Simple continuous integration for PHP projects.
PHPUnit extension for database interaction testing
Parallel testing for PHP
BDD assertion library for PHPUnit
PHPUnit extensions and rules for PHPStan
BDD code blocks for PHPUnit and Codeception
Library for testing user classes related to the Symfony Dependency Injection Component
Selenium Server integration for PHPUnit
PHPUnit Pretty Result Printer
CLI frontend for php-code-coverage
Invoke callables with a timeout
Find and report on slow tests in your PHPUnit test suite
Library for testing user classes related to the Symfony Config Component
Testing Suite for OpenCart Development
A PHPUnit GUI
Mockista is library for mocking, which I've written, because I find mocking in PHPUnit slow.