This is a program very similar to other expensive Live Support Chats, xHTML and CSS compliant and...
Free and GPL.
It has also a WinApp but that is neither free nor GPL (but not too expensive).
JustVanilla is the 'web-accessibility' service that enables people with disabilities, especially visual disabilities, to easily access and use the Internet.
It offers a unique combination of easy to learn and use web-accessibility features and supporting software solutions which can dramatically enhance the way the www is accessed and used for work, learning and recreation.