I am going to take a stab at your question, but I think you need to flesh out your question.
What are other people using? What tags to look for?
Section 508 is more-or-less UI-focused rather than backend. For example, you can walk around the block 5 times to develop/display a form, but as long as each <input>
has a <label>
that is all that matters. You may want to review the standards for compliance. That is a link to the standards for websites. But a lot of agencies use the software application standards AND the website standards for sites that are considered applications. Documentation provided with your system must be compliant which is covered under 1194.41, which references 1194.22.
Testing tools
There are various tools, but one of the best is WAVE.
Are AJAX and jQuery and Javascript compliant, I seem to find answers like "it depends" Thus in need of this compliance as the company wants to sell product to the government and needs to be compliant.
Since there is so many ways to to construct things, the answer is kind of "it depends." My answer on modal dialogs and others in accessibility may help more. The jQuery page has a tag for accessible plug-ins. There is also a jQuery Accessibility Google group that may be a good resource.