Juicy Studio: Quality Assurance

Local Tools

Readability Test: The readability test analyses a Web page to determine how readable it is.
CSS Analyser: The CSS analyser tests for basic accessibility errors such as colour contrast and units of measurement.
Luminosity Colour Contrast Ratio Analyser: The luminosity colour contrast ratio analyser tests whether the contrast between the background and the foreground is sufficient.
Image Analyser: The image analyser tests Web pages to ensure that images have been specified properly.
Link Analyser: The link analyser lists all links on a page with an icon to indicate whether or not the link resolved successfully.

Form Help: A configurable Greasemonkey user script that allows textarea controls to be resized to suit the user's preference, and allows dropdown lists to optionally be permanently expanded to the user's preference.
Heading Navigation: A configurable Greasemonkey user script that allows keyboard navigation to headings. Headings can either be navigated by the heading level, for example, all h2 elements, or by any level.
Manage Access Keys: A Greasemonkey user script that displays the access keys on a web page, along with a facility to edit them to suit the preferences of the user.

Colour Contrast Extension: A Mozilla/Firefox extension that reveals the colour contrast between the foreground and background colours of all elements in the DOM.
Complex Table Inspector: A Mozilla/Firefox extension to reveal accessibility features in tables. Also available as a bookmarklet for other browsers.
Glossary of Terms Extension: A Mozilla/Firefox extension to reveal abbreviations and acronyms added by the author.

Reveal Definitions Bookmarklet: A bookmarklet that exposes definitions marked up with the dfn element as a definition list at the end of the document.
Complex Table Inspector Bookmarklet: Reveal accessibility features in tables.
Accessible Style Sheet Bookmarklet: An article explaining how to create an accessible style sheet bookmarklet, with a usable example at the end.

The following is a list of external tools that are useful for web developers.

Collection of Validators: From Jens Meiert, an impressive collection of validators and other tools that are useful to web developers in a single resource, along with a site check page to automatically provide a set of links with the correct values for a whole list of useful services.
Flickering and Photosensitive Epilepsy Test: A tool that can check a page or individual images to ensure that flickering isn't in the critical range.
RampWeb Toolbar: Accessibility toolbar available for Internet Explorer, and as a Mozilla/Firefox extension.
Web Accessibility Toolbar for Internet Explorer: A plugin to help evaluate the accessibility of web pages, from Vision Australia.
The Web Developer Extension: An extension for Mozilla Firefox and Mozilla that adds a menu and a toolbar to the browser with various essential tools for web developers.
XStandard WYSIWYG Editor: A robust, standards compliant WYSIWYG editor.