Date: 04/24/06 (WebDesign)    Keywords: php, web

http://webxact.watchfire.com/

i've seen people link validataor.w3.org a few times, but i've never seen this. just wanted to drop a note!

edit: let's add one for color blindness, too: http://www.vischeck.com/vischeck/vischeckURL.php

Source: http://community.livejournal.com/webdesign/1100264.html