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™.
WORKS WITH NEW YOUTUBE LAYOUT, "Best Youtube Video Downloader", Only one with 1080p Full-HD and 256kbps MP3 Direct Links. A clean, fast and simple addon for superfast and easy downloads in FLV, 3GP, MP3, MP4, 720p, 1080p qualities on Youtube pages.
Get all CSS styles of selected text
Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.
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!
瞬间过滤B站(bilibili.com)刷屏的相似弹幕，还你清爽的弹幕视频体验。 *a tweak for a Chinese website. Please ignore this add-on if you are not a user of bilibili.com.*
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.
Open and download links in IDM (Internet Download Manager) easily
Blocks cryptocurrency miners all over the web.
Removes ads, promoted content and some more distractions from Facebook's News Feed. Also adds some responsiveness to Facebook!
XDM integration module for Firefox Quantum. This addon should be used with XDM 2018 and higher to take over download from Firefox. Please visit https://sourceforge.net/projects/xdman/ for more information.