Interested in testing the accessibility of your site? Here's a couple of free online tools that will get you started.

• Total Validator Service - Tests Web Content Accessibility Guidelines (WCAG) 1 (1-3), WCAG2 (A-AAA), and Section 508
• EvalAccess - Tests WCAG1 (1-3)
• Section 508 web accessibility checker - As the name would suggest, tests Section 508
• Cynthia Says - Tests Section 508, and WCAG1 (1-3)

You might also try the Firefox Accessibility Extension by the Illinois Center for Information Technology Accessibility, or the Web Accessibility Toolbar by Vision Australia.

I've been working on comparisons of the WCAG 1.0, WCAG 2.0, and Section 508. I thought a few of my readers might find the results interesting, so I've posted it. Due to theme limitations, I found it easier to give it its own page. Go take a look at the Accessibility Comparisons. Please note, this project isn't finalized. The document will be updated as I have time. This work is based on Comparison WCAG and Section 508 Web - http://www.jimthatcher.com/sidebyside.htm

I was putting together a list of resources that I regularly use for someone, and I thought it might be helpful for someone else.

Firefox Resources

• Web Developer -  all purpose testing. Extremely helpful when checking CSS, but also good with images, forms, and other HTML elements.
• Firefox Accessibility Extension - evaluate accessibility on web sites and other HTML documents
• WAVE Toolbar - another good accessibility testing tool
• IE Tabs Plus - open IE within a Firefox tab
• LinkChecker - the name says it all
• MeasureIt - find dimensions of online content or space
• ColorZilla - find the exact color you're seeing in the browser.
• HTML Validator - a great validation tool for testing web pages.
• Fangs Screen Reader Emulator - emulates a screen reader for testing accessibility and other usability factors.
• Split Browser - open two pages in the same window.
• Live HTTP Headers - know what your page is loading, and from where
• FireShot - superb screenshot tool.
• Firebug
• Colour Contrast Analyser
• Multi Links
• Other helpful, extensions
  • All-in-One Gestures - makes browsing easier.
  • Profile Manager and Synchronizer - open multiple Firefox profiles at the same time.
  • Scribefire - designed as a blogging tool, it's also helpful for just collecting links and content in clean HTML.
  • IE View - switch from Firefox to IE in a click. No need to find the page again in IE, just open your current Firefox page in IE.
  • FoxView -open your current IE page in Firefox
  • OperaView - open your current Firefox page in Opera
  • Chrome View - open your current Firefox page in Chrome
  • Safari View - open your current Firefox page in Safari
  • Pencil Wireframing Tool

Resources for Internet Explorer

• Internet Explorer Developer Toolbar - Now built into base browser.
• Web Accessibility Toolbar for IE

Resources for Opera

• Opera Browser - A resource all by itself. If you're not familiar with it, it's another high quality browser that's useful to test pages in.
• Web Accessibility Toolbar for Opera

All Browsers

• xmarks - extensions available for most browsers.
• extension for government video