Explore powerful tools and features to customize Firefox and make the browser all your own.
Tons of features to improve your user experience on YouTube™.
Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!
Finally, an efficient blocker. Easy on CPU and memory.
Play YouTube™ Videos in Flash or HTML5 Player
Squared tabs, application menu, add-on bar, small button view and many more 'old' features for 'Firefox 29-56', not for Firefox 57+! Release builds Beta builds
Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!
Does everything for an HTML table: Copy (table/row/column/cell), Sort (multi-column), Search (regex, range operations ...), Filter, Chart, Statistics, Rearrange, Combine/Compare. To use: Right click in a real HTML table for the "tabletools2" option.
Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch to a specific one.
ReloadMatic automates the periodic reloading of browser tabs. It is the spiritual successor of the ReloadEvery add-on but with additional features and updated for new browser versions.
Automatically refresh a tab periodically
Sync Tab Groups are an easy way to organize your current tabs depending on a topic. Each open group is synchronized with a window so that all tabs change are saved. Hence, you can close a current tabs-flow while opening another one.
Control the Tab behavior. positining new tabs, activate tabs after closing