Current Accessibility Tools – Accessible IT Group
Additional accessibility tools created by UIUC
Web Accessibility Evaluation Tools List
W3C a list of tools to assist webdevs in making sure they're compliant.
Accessibility Bookmarklets
Bookmarklets : Highlight accessibility features of web pages
ANDI
I haven't heard "bookmarklet" in awhile. It's all extensions these days. This lil tool works great though!