Discover From This Page & Topic: [Discover] unittesting
[Discover] Camp Smalltalk SUnit http://sunit.sourceforge.net/
(smalltalk framework programming testing) 
[Discover] Selenium: Selenium http://www.openqa.org/selenium/ (javascript testing browser development)
[Discover] Test Your Helpers | Ruby on Rails for Newbies http://nubyonrails.topfunky.com/articles/2006/04/07/test-your-helpers (rails unittesting)
[Discover] Heckle http://rubyforge.org/projects/seattlerb/ (ruby unittesting)
[Discover] Download the Simple Test testing framework - Unit tests and mock objects for PHP http://www.lastcraft.com/simple_test.php (php tools unittesting webdev)
[Discover] PEAR :: Package :: PHPUnit2 http://pear.php.net/package/PHPUnit2/ (php tools pear unittesting)
[Discover] Jester http://jester.sourceforge.net/ (unittesting)
[Discover] nose: a discovery-based unittest extension http://somethingaboutorange.com/mrl/projects/nose/ (python testing framework nose)