J4P5, a JavaScript interpreter written in PHP 5, that allows to run untrusted scripts in a sandbox on your server. It aims to implement most of Ecma-262 3d edition.

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.