The first and only download manager/accelerator built inside Firefox!
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
The Web Developer extension adds various web developer tools to the browser.
Displays tabs in tiled layouts in Firefox. Arrange tiles horizontally, vertically or in a grid. Resize tiles by dragging splitter bars. Tabs and links can be dragged to open in other tiles. Supports multiple tiled layouts. Works with tab groups.
Multi Links lets you open, copy or bookmark multiple links at the same time rather than having to do them all individually.
Collections are groups of related add-ons that anyone can create and share.Explore Collections