Adds a "File" menu option to open multiple locations at a time.
Replaces short urls with the originals so you can see where links actually link to.
Resize and position Firefox with keys: ALT+1, 2, 3, 4, 5, 6, 7, 8, 9 and 0.
Provides control over HTTP headers (User-Agent, Referer and Accept-Language) on a per-site basis.
Add favicon button of your favorite sites in tabs browser to open new tabs and in homepage button to have more homepage.