Information on web accessibility, usability and web standards.
Weblog about web standards, accessibility and usability.
Guidelines and resources from the World Wide Web Consortium (W3C).
The US Dept. of Justice's resource page for the ADA. Voluminous, and not limited to computer and Internet issues, but at least it should be fairly authoritative, if you're willing to wade through the material.
Includes background information on Accessibility and lists computer related accessibility aids according to types of disability.
Campaign for a Non-Browser Specific WWW. Resources, more information and links about this effort.
The AWARE center is a resource developed by the HTML Writer's Guild to assist all web writers to create more accessible web sites.
Information, training, resources, guidelines and standards for Web accessibility and disability access to the Web.
Online tool to show what your site colors look like to color-blind people.
Discusses the invisible image techniques for text only browsers.