TextTest is an application-independent tool for text-based functional testing. This means running a batch-mode binary in lots of different ways, and using the text output produced as a means of controlling the behaviour of that application.
Web Interface for PHPUnit It features runing tests in a web interface with ajax. Every test is run in sepparate 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
Pattern Sandbox is a small utility for visually testing and practicing regular expressions by highlighting matching text. It specifically uses the java.util.regex library which has a similar syntax to Perl5 regular expressions.