A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.
AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.
Visual bookmarks for Firefox. (Works with all latest versions of Firefox)
UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.
Make any pages' search functionality available in the Search Bar (or "search box")...
ImgLikeOpera allows load only the images that you want in Firefox browser. This extension is very useful for non broadband users...
Opens "Downloads" manager in tab from Tools menu or automatically when a download starts (default). See Options for more choices.
Press the "Space" key at the end of a page to load the next page (à la Opera)
This provides separated "Bookmarks" Sidebar panel like Opera.
Brings a few (mostly tab related) features from older versions of Opera to Firefox.