Firefox addon to simplify the use of temporary e-mail addresses in order to protect your real address from spam.

A sexy server logger console in Firebug

A Screen Reading Extension for Firefox

JavaScript Unit Testing for Firefox

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

All data is sent via response headers and will not interfere with the content on your page.

FirePHP is ideally suited for AJAX development where clean JSON and XML responses are required.

The Web Developer extension adds various web developer tools to a browser. The extension is available for Chrome, Firefox and Opera, and will run on any platform that these browsers support including Windows, OS X and Linux.

Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.