Zombie.js driver for Mink framework
PHP Content Repository compliance test suite
Sahi.js client for PHP 5.3
Stub chained methods
Easier testing in Laravel.
A Database Factory for PHP Unit Tests
FBMock is a PHP mocking framework designed to be simple and easy to use.
A library that makes it much easier to generate a proxy of your system under test (SUT)
Composer distribution of Selenium Server Standalone, the browser automation framework. Adds a executable to your composer bin directory.
A Self-Hosted TDD Dashboard & Tests Watcher
Mockista is library for mocking, which I've written, because I find mocking in PHPUnit awful.
Testing object factory for PHP
Tool that can generate skeleton test classes from production code classes and vice versa
A continuous test runner for CLI
GhostDriver (webDriver) for Mink framework
A BDD testing framework
Selenium 2 Testing Framework (for PHPUnit)
Testing Suite for OpenCart Development
Fixture replacement for focused and readable tests - A PHP port of Thoughtbot's Ruby Factory Girl
Sahi.JS driver for Mink framework
Magento PHPSpec extension
PHP version of the Sauce Labs API
Unit testing, mock objects and web testing framework for PHP built around test cases.
Tools for testing Symfony2 bundles
Convert Regular Expressions into text, for testing