xSidebar Requires Restart Featured
Firefox style sidebars for SeaMonkey...
NewsFox Requires Restart Featured
NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
FlashGot Mass Downloader Requires Restart Featured
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
The first and only download manager/accelerator built inside Firefox!
To create your own collections, you must have a Mozilla Add-ons account.