Accessibility checker for Web Content Accessibility Guidelines (WCAG) 2.0 and Section 508 accessibility.

Color combination contrast testers against WCAG 2.0.

Simulate different types of colour blindness by simply uploading an image and selecting your view.

Helps determine the legibility of text and the contrast of visual elements. Available for Windows and Mac, and in multiple languages.

Displays a page's heading hierarchy in a side pane.

Check the accessibility of a page against different standards and conformance levels with this client-side application.

Vision problem simulator, including colorblindness, low contrast, low acuity, obstructed visual field, visual snow, glare, ghosting and cataractsm, and nystagmus.

NVDA (Non-Visual Desktop Access) is a free screen reader.

Evaluate any web page for accessibility issues at any given time.

Determines if text and background colours meet WCAG 2.0.

Check your current page for accessibility against WCAG 2.0.

Shows accessibility information and issues.

Checks whether text and background colours meet WCAG 2.0.

Live web-based browser testing on all desktop and mobile browsers (free trial, paid tool).

Find and group stylesheets and style blocks on most websites, providing an easy way to analyze the code and plan refactors.

Allows you to inspect and edit HTML, CSS and Javascript live in any webpage.

Scans a page for HTML validation errors which can cause problems with display.

Allows you to edit any textarea on the web in your favourite text editor (eg with syntax highlighting).

Allows quick and easy highlighting of all instances of a word or phrase within a page.

Checks your site for broken links and can be run on the command line and scheduled.

Extremely fast link checker for finding broken links on a web page.

Shows the size of linked documents in a pop-up before you download it, which can help with adding file sizes to document links.

Checks spelling and highlights errors. Also useful for finding 'ANU' and checking that it's used correctly.

Webpage highlighter that can help you keep track of content that needs attention.

Overlays the ANU grid on any webpage using any browser, allowing you to check that everything is properly aligned.

Eyedropper tool which allows you to find the colour of any element on a webpage. Can be useful for contrast checking (see accessibility).

Dummy text made to look like readable English for testing page designs.

Quickly clear all your browser cache with a single click.

Shows you which version of Drupal a site is using and whether it is outdated.

A handy toolbar button to empty the cache and reload the page so you can be sure you're looking at the latest version.

Allows you to quickly and easily backup your Firefox extensions.

Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.

Allows quick enable and disable of Java, Javascript, Images, Stylesheets, Flash, Cookies, Image Animations, Silverlight, and Proxy from the Statusbar and/or Toolbar.

Add a 'Restart' menu item to the 'File' menu, with an optional toolbar button, which will restart the program without losing your tabs.

Allows copying of text multiple times from multiple locations before saving all to the Clipboard. It does not interfere with normal copy/paste functions until data is saved to clipboard.

Shows you which technology (eg content management system or programming language) is being used to deliver any webpage.