Tools

• AIS Toolbar – an excellent tool to help check the accessibility of websites.
  http://www.nils.org.au/ais/web/resources/toolbar/

• Macromedia Accessibility Resource Centre provides a downloadable accessibility validation and reporting tool for Dreamweaver Version 3.0 and up. The Accessibility checker will check pages for conformance to the Web Accessibility Initiative's "Web Content Accessibility Guidelines Checklist, Version 1.0" on all three Priority levels.
  http://www.macromedia.com/macromedia/accessibility.
  

• Vischeck - Colour blindness simulator. http://www.vischeck.com/
  
  
• Talklets and the Textic Toolbox
  
  
  Talklets let you listen to any web text in clear, life-like speech with a choice of accents and languages. Website owners can easily add Talklets accessibility to a website to provide vocalised web text for all visitors without the need for downloads or special software. The standard Talklets Toolbar offers a range of speech and visual controls and provides a handy way of adding such enhancements to a web page with the addition of a small JavaScript snippet to each page to be speech enabled. http://www.textic.com/
  

General Websites

BBC Research
http://www.bbc.co.uk/commissioning/newmedia/websites.shtml


Disability Discrimination Act – The Disability Rights Commission provides useful information on the legal aspects of web accessibility.
http://www.drc.org.uk/thelaw/thedda.asp


Outlaw.com – contains the popular 'Disabled access to websites under UK law' guide, and news articles relating to accessiblity and the law.
http://www.out-law.com/


The Irish National Disability Authority IT Accessibility Guidelines - The Irish National Disability Authority website provides a plain English interpretation of the W3C guidelines together with the reasons behind why each checkpoint is important.
http://www.accessit.nda.ie/guidelineindex_1.html


The Web Standards Project – The Web Standards Project website provides advice and information on the implementation of web standards and runs a campaign to encourage browser developers to ensure they adhere to W3C standards for code compliance. For an introduction to the rational behind standards they have an excellent educational FAQ at http://archive.webstandards.org/edu_faq.html.
http://www.webstandards.org


Usable Web – The Usable Web website includes a collection of links about information architecture, human factors, user interface issues, and usable design specific to the World Wide Web.
http://www.useableweb.com


Useit.com – Useit.com provides advice on both accessibility and usability featuring articles and news links.
http://www.useit.com


Web Accessibility Initiative – The W3Cs Web Accessibility Initiative is a good place to start when learning about web accessibility. It offers an excellent resources section, together with the Web Content Accessibility Guidelines and Checklists.
http://www.w3.org/WAI/
http://www.w3.org/TR/WCAG10/ – Web Content Accessibility Guidelines.
http://www.w3.org/TR/WCAG10/full-checklist.html – Web Content Accessibility Guidelines Checklist
http://www.w3.org/WAI/Resources – The resources section is a good place to start learning.


WebABLE – The WebABLE website offers a wealth of disability-related internet resources, including an extensive (North-American biased) database on all aspects of accessibility.
http://www.webable.com


WebAim – WebAim, the Web Accessibility in Mind Project provides a number of articles, a discussion forum and a number of simulations which is useful for testing websites.
http://www.webaim.org

The Web Design Group are excellent at demystifying the W3C recommendations and providing tutorials on accessible implementations.
http://www.htmlhelp.com

For Developers

A List Apart – resources for people who make websites.
http://www.alistapart.com/
It also hosts the Accessify Forum which is an accessibility related discussion group.
http://www.accessify.com
http://www.accessifyforum.com


AskTog – AskTOG by Bruce Tognazzini is perhaps the best place to start learning about human computer interaction (HCI).
http://www.asktog.com/basics/firstPrinciples.html


Aware Centre – (Accessible Web Authoring Resources and Education) serves as a central resource for web authors for learning about web accessibility.
http://aware.hwg.org


Dive Into Accessibility – Dive Into Accessibility is an online book which discusses accessible design issues and techniques.
http://www.diveintoaccessibility.org


Juicy Studio – Juicy studio provides a repository of useful articles on accessible techniques and practices together with some useful tools to assist developers in creating accessible content.
http://juicystudio.com


W3C Schools – Whilst not specifically about web accessibility this website includes many tutorials on learning HTML, CSS, XML and much more.
http://www.w3schools.com