Validators

HTML

http://validator.w3.org/

http://jigsaw.w3.org/css-validator/

Accessibility how-to directions from the Univeristy of Texas
Great for learning how to make your content accessible.
OCAWA (Operational Control and Analysis for Web Accessibility) http://www.ocawa.com/en/faireaudit.htm
Test a page at a time for free

This Firefox toolbar extension, from OCAWA, gives you information on the accessibility of the page currently loaded in your Firefox browser. You can see at a glance the work that needs to be done to reach accessibility standards level.
http://www.ocawa.com/en/Home/OcawaToolbar.htm

Hint: Once you have installed the extension, click on the Audit button to check page loaded into your Firefox browser.
WAVE (provided by WebAIM)
http://www.wave.webaim.org/index.jsp
Test for free
WebXACT (provided by Watchfire)
http://webxact.watchfire.com/
Test a page at a time for free
Complete list of accessibility tools (WAI - Web Accessibility Initiative)
http://www.w3.org/WAI/ER/tools/complete

Last update: May 24, 2010