Status bar widgets and progress indicators for Firefox 4+
Anti-Aliasing Tuner for Direct2D/DirectWrite Text Rendering
Makes the Bookmarks and History Sidebars a flat list view, instead of the traditional tree view.
Enter searched words in the Firefox search box to sync when you search in web. In addition this add-on has automatic learning function.
Extends the Location Bar with set of commands to (Shorten URL's,Copy URL,Search site,Go up, pNg, Tag pages easily ,Navigate through sequential URL's,View page cached version,Surf anonymously using online phproxy servers, Twitter)
Restore Linkinfo and FormInfo which has been deleted from PageInfo of Firefox3.
This extension does not seem to work on MAC.