During testing, allows Admins to quickly switch to act as a different user in the system
Sahi.js client for PHP 5.3
BDD-style testing framework
A library that makes it much easier to generate a proxy of your system under test (SUT)
A Test Driven Development Dashboard Package
A Database Factory for PHP Unit Tests
Easier testing in Laravel.
A continuous test runner for CLI
Composer distribution of Selenium Server Standalone, the browser automation framework. Adds a executable to your composer bin directory.
Selenium 2 Testing Framework (for PHPUnit)
Testing object factory for PHP
FBMock is a PHP mocking framework designed to be simple and easy to use.
A BDD testing framework
Tool that can generate skeleton test classes from production code classes and vice versa
Mockista is library for mocking, which I've written, because I find mocking in PHPUnit awful.
Convert Regular Expressions into text, for testing
Sahi.JS driver for Mink framework
Testing, CI and documentation of PHP projects by convention.
Fixture replacement for focused and readable tests - A PHP port of Thoughtbot's Ruby Factory Girl
PHP version of the Sauce Labs API
Selenium driver for Mink framework
Tools for testing Symfony2 bundles
Unit testing, mock objects and web testing framework for PHP built around test cases.
Testing Suite for OpenCart Development
A PHP experimentation library inspired by Github's own Scientist.