These extensions bring back the old features that has been removed on new Firefox
Status bar widgets and progress indicators for Firefox 4+
This restartless extension provides a separate downloads window.
Brings back the keyword.URL preference on Firefox 23 and up.
Restore squared tabs, appmenu, add-ons bar, small button view and more on Australis UI (Windows/MacOSX/Linux + Fx 29+).
Devbuilds on versions page!
Add RSS icon back into location bar (URL) in Firefox 4.0. This icon was showed in Firefox 3.5/3.6 by default when page offered feeds.
No longer supported. Since I can't delete this to stop receiving bullshit emails from mozilla, I'm making a fake user with a bad email to swithc to.
Get your shit together AMO
Causes Firefox 3's Location Bar "AwesomeBar" to look and act more like Firefox 2's old location bar.
Has an options menu to set things just to your liking.
Returns the 'Properties' menu item that was removed in Firefox 3.6 to the context menu.
Gives you a place to put all your addon buttons without over-crowding the navigation bar.
Since Firefox 25, the FindBar was made independent for each tab. This addon reverts the FindBar to classic/global behavior.
Add "Undo" and "Redo" menu in context menu of bookmarks.
Restore Linkinfo and FormInfo which has been deleted from PageInfo of Firefox3.
This extension does not seem to work on MAC.