IBM site focused on accessibility issues.
CoSN site focused on K-12 assistive and instructional technologies.
JAWS - screen reader software for the visually impaired
Apple Computer Disabiliy Resources
Accessible Web Page design issues. [disability issues]
IBM Home Page Reader - a screen reader for the visually impaired with special capabilities for Internet tasks.
This site offers practical tips on web accessibility issues.
W3C web content accessibility guidelines. Guidance on the preparation of web pages to make content accessible to individuals with disabilities.
This site is associated with the $100 laptop project associated with Nicholas Negroponte and others. However, the site provides more than information about this effort. The intent is to explore the power of access to learning tools.
World Wide Web Consortium site devoted to web accessibility.