WebAIM 3.0 is another accessibility validator, much like Bobby, and it is able to validate pages to WCAG 1.0 or Section 508 specifications.
Page validation with this tool is less laboured as it isn’t limited in the number of validations it can do in a certain time period, the debugging info is useful and informative, and lastly supporting the use of WebAIM “bookmarklets” for the following browsers: Internet Explorer, Mozilla, Netscape 6+ and Opera.