Watchfire WebXACT
WebXACT is a free online service that lets you test single pages of web content for quality, accessibility, and privacy issues. Page URL:

Web Accessibility Initiative (WAI) - home page
Web Content Accessibility Guidelines 2.0 Working Draft 30 June 2005 (WCAG 2.0 Web accessibility guidelines, techniques, and tools provide the basis for

US Department of Health and Human Services: Usability
Provided by the National Cancer Institute. Includes information and resources on making web sites and other user interfaces more useful, usable,

Irish IT Accessibility Guidelines
Irish National Disability Authority IT Accessibility Guidelines Version 1.1, Guidelines Home Page. Skip past Navigation Links [Home | Web | Telecoms