Gravy: A WordPress Theme Framework
http://www.darrenhoyt.com/products/gravy/
AmpleSDK - Ajax GUI Framework
http://www.amplesdk.com/
jQuery Date Range Picker
http://www.filamentgroup.com/lab/date_range_picker_using_jquery_ui_16_and_jquery...
Speed/validity selectors test for Javascript frameworks
http://mootools.net/slickspeed/
P4A - PHP Rapid Application Development Framework
http://p4a.crealabsfoundation.org/
Blueprint - CSS Layout Framework
http://www.blueprintcss.org
Cappucino Web Framework
http://cappuccino.org/
Raphael - Vector Javascript Framework
http://dmitry.baranovskiy.com/raphael/
Zend PHP Framework
http://framework.zend.com/
Mootools Mocha UI - Javascript Framework
http://mochaui.com/