Cintient is a Continuous Integration web application written in PHP. It was written to be simple to setup and straightforward to use and aims to bring CI practices to most small to medium projects that just don't justify the setup of a more complex CI solution.
PHP_Depend is an adaption of the established Java development tool JDepend. This tool shows you the quality of your design in the terms of extensibility, reusability and maintainability.
Small and lightweight MVC framework for PHP web apps. It provides a very flexible structure for your apps, without forcing you to abide to huge documentation, a specific file and naming structure, etc.