PhpiCalLib, a PHP library providing an iCalendar parser and object creator. It is object orientated, unit tested, and conforms strictly to the latest iCalendar standard (the successor to RFC2445).
PHPUnit Web Interface, web Interface for PHPUnit, it features running tests in a web interface with ajax. Every test is run in seprate sandbox so that they are not altered by the run of the other tests. Code coverage shown in a cool window that can be accessed easy from the web.