Mozilla Update

If you want to make your Mozilla software more powerful, visit Mozilla Update. You can locate and download many extensions, themes, and plugins for your favorite Mozillaware. One of the must-have FireFox extensions for web developers is the Web Developer extension. I use the Web Developer extension daily to check various source codes and/or test changes I like to make to a site.

I also recommend the FireFTP extension which is a great FTP client.

If you just want to have fun with your browser, check out FireFox Themes.