FireBug is a new tool for Firefox that aids with debugging Javascript, DHTML, and Ajax. It is like a combination of the Javascript Console, DOM Inspector, and a command line Javascript interpreter.
switchproxy that works with FF 1.5
This extension allows you to use your Gmail Space (2 GB) for file storage. It acts as a remote machine. You can transfer files between your hard drive and gmail. This is similar to "Gmail Drive" on windows platform.
Firefox extension bringt WM-Ergebnisse in den Browser
This extension makes all html textareas into a very stripped-down version of Vi[m].
Add-Art is a Firefox plugin that replaces ads on websites with art images.
vi keybindings für mozilla... whoa!