In order to validate our code, we have used Bobby 5.0.
"Bobby is a comprehensive web accessibility software tool designed to help expose and repair barriers to accessibility and encourage compliance with existing accessibility guidelines. Bobby tests for compliance with government standards, including the U.S. Government's Section 508. It offers prioritized suggestions based on the Web Content Accessibility Guidelines provided by the World Wide Web Consortium's (W3C) Web Access Initiative. Bobby allows developers to test web pages and generate summary reports highlighting critical accessibility issues before posting content to live servers."
We also use PDF's in places as a standard downloadable document. If you require the latest version of Adobe Acrobat Reader, you can get a copy from the Adobe Website.
This site utilises Adobe Flash in some places, if you cannot see the flash movies you can download the player from the Adobe website.