Found another big list of accessibility checking tools at NSCU. Maybe I should start making a comprehensive list. Or a wiki. Or a delicious link set. Or something. Anyhow...

Fangs, a Firefox plugin, is interesting. I tried it out. Basically it displays a text version of your site similarly to how JAWS (the most popular screen reader) would read it. So it helps you look for a bunch of repetitive stuff, etc. It's not perfect, though, but nice for a quick page check.

Google Home Page

Fangs' "intepretation" of google.com would be read by JAWS

Fangs' list of links (similar to JAWS' link list)