RAMP
From Deque Systems, is a software solution with unparalleled product depth that automates analysis and remediation of Section 508 rules and W3C WAI Web Content Accessibility Guidelines, providing efficiencies of over 95% as compared to a manual effort. RAMP accomplishes the task of making Websites and applications accessible, usable, while greatly improving the productivity of Web content contributors as they strive to accomplish compliancy to accessibility standards.  In addition, RAMP™, written in Java for platform independence, is also accessible to people with disabilities.  
RAMP Lite 
Allows you to have the power of RAMP™ analysis engine without the remediation. It allows you to generate extensive reports and document the non-compliant issues. This inexpensive solution allows Project Managers and senior level executives to monitor and ensure success of the accessibility of all their projects.
RAMP ARC
Lets you repurpose your original content with accessibility in mind.  RAMP ARC can generate tagged PDF and accessible HTML from your original source in a single click with minimal up-front customization.