profirefox.org

Pixel Perfect is a Firefox/Firebug extension that allows web developers and designers to easily overlay a web composition over top of the developed HTML.
* Requires Firebug

We are big fans and users of Firefox because of the big community of users and plugin creators. Here are 5 plugins to make your graphic design task a little easier.

Greetings to all of our great community testers – you are our most valuable resource. We now have a build available for the upcoming* Firefox 3.0.9* security and stability release. Note that this build is a release candidate and is intended for pre-release testing. We would like your help in testing the [...]

Online University provides the ultimate list for the student researcher including the best in add-ons, guides, help in general, and more.
Categories include:
-General Help
-Articles and Guides
-Best Add-ons
-For Better Searches
-Appearance
-For Speed
-Saving and Citing
-Security and Privacy

Firefox saves your sessions as you browse, making it easy to recover when it crashes. On today’s Tekzilla Daily, Veronica shows you how to adjust the interval that Firefox autosaves.

Some users have reported that NoScript (a very popular Firefox add-on) by default blocks certain scripts from some services like FriendFeed, Twitter, etc that need to run in order to share links with them.
For you to overcome this in the least troublesome way, we’ve compiled a whitelist for NoScript of all services that Shareaholic supports.