The original Bobby was a free online tool, written by Josh Krieger and provided by the Centre for Applied Special Technology (CAST), used to validate websites for WAI and Section 508 compliance.
Watchfire's offering, now part of an IBM suite described below, tests pages of web content for quality, accessibility, and privacy issues.
The free tool was officially closed by the owners, IBM, on February 1, 2008.
[2] The software is now available as part of IBM's Rational Policy Tester Accessibility Edition.
[1][3] Currently, the Web Accessibility Evaluation Tool (WAVE) provides this free service at wave.webaim.org.