An extension to hide the caption of Firefox, displays Minimize, Maximize/Restore and Close buttons on the menubar/nav-bar, and includes "Tiny Menu" function. This extension also provides "Bookmarks" and "Histroys" buttons with popup menu.
Chromifox Companion configures Chromifox Extreme themes with Chrome like features.
ChromaTabs Plus makes tabs more readily identifiable by tinting each tab a different color depending on the website loaded.
See the "Beta Channel" below for a beta version that is compatible with the new Firefox 4.0 betas.
Show tooltips for links and images with URLs, icons, alt text, and long titles.
Snowl is a Firefox extension that helps you follow and participate in online discussions. It supports Twitter (including multiple Twitter accounts) and it makes it easy to subscribe to and follow feeds in one of several views.