One-shot, free, WCAG 1.0 AAA checking - siteSifter Lite
Last updated 28th of May, 2008
With the release of the most stable and functional version of siteSifter ever, Greytower has also created a free, one-shot, one-page testing service for the WCAG 1.0 AAA baseline - siteSifter Lite. With this you can try before buying, and test pages through an easy to use minimalistic interface. Go on - you know you want to!
See also http://www.sitesifter.co.uk/lite/.