Tools

Web developer bar

• Web developer bar for Chrome
• Web developer bar for Firefox

The Web Developer extension adds a toolbar button to your Chrome browser with various web developer tools.

W3C Markup Validation Service

Check the markup (HTML, XHTML, …) of Web documents

Screen reader

• NVDA free screen reader
• Jaws
• VoiceOver, by default on all mac.

Understand Website Accessibility with the Firefox Accessibility Inspector