"The HTTPS Everywhere extension fixes these problems by rewriting all requests to these sites to HTTPS"

Firefox consumes a lot of CPU resources

A Unified Notification System for the Web

"In short, Jetpack is an API for allowing you to write Firefox add-ons using the web technologies you already know." html, css & javascript

Image editor in firefox

automatically save some files according to keywords, source url, etc

The fix is actually pretty simple and involves changing the state of “browser.cache.memory.enable” in Firefox’s “about:config“.

"filters out undesirable comments from YouTube comment threads. You can choose to have any of the following rules mark a comment for removal (...)"

It's supposed to bring some nice Vista features to your XP Explorer. but I haven't used Vista much, so to me it just makes my Explorer work more like my Firefox : tabs, breadcrumbs, plugins, skins.. and it doesn't waste ressources ! Use it with Taskix !

component or update brought by the SP1 makes programs accessing Internet hang after a random time (...) Typically, your program will stop downloading data withtout crashing (...) process will be impossible to kill and the only solution is to reboot.

Add-Art is a free FireFox add-on which replaces advertising on websites with curated art images. The art shows are updated every two weeks and feature contemporary artists and curators.

The Canvas 3D project aims to add support for low-level hardware accelerated (where possible) 3D rendering via the HTML canvas element.

creates a FF extension from a Greasemonkey Script

gDocsBar is a sidebar extension for firefox, a perfect companion for Google® Docs.

With gDocsBar, you can drag and drop multiple files into the sidebar to upload documents.

You can search and filter documents right from the sidebar.

"CookieSwap enables you to easily swap all your cookies so that you can be logged in to multiple web e-mail accounts (like Gmail and Yahoo! mail) at the same time and quickly switch between them." finally !!

nice slideshows of Flickr/Google/Yahoo/Picasia/Facebook/(etc)... well a nice way to watch pictures.. but there is still room for improvement

"CoScripter is a system for recording, automating, and sharing processes performed in a web browser"

allows you to test the lastest nightly version of firefox (3!) as a portable version, so you don't mess up with you "normal" firefox !