Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Tile Tabs WE
Take tabs from parent windows and arrange them in layouts of tiled sub-windows, using the toolbar button, context menu or keyboard shortcuts. Makes it easy to browse, compare or monitor multiple pages. Synchronize scroll. Save and re-open layouts.
22,633 users
ContextSearch web-ext
Select text and search from the context menu or a tiled popup using any of your installed search engines. Add new search engines with a right-click, edit favicons and query strings. POST compatible, simple UI, highly configurable. For FF 57+
2,876 users
Passbolt
Passbolt is an open source password manager for teams. Find out more at https://www.passbolt.com
5,190 users
FoxClocks
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
27,289 users
Enhancer for YouTube™
Tons of features to improve your user experience on YouTube™.
503,470 users
SoundFixer
Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)
14,692 users
YouTube High Definition
YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
196,491 users
Video Speed Controller
Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
31,344 users
Wikiwand: Wikipedia Modernized
Good old Wikipedia gets a great new look
17,343 users
Wikipedia Peek
Shows previews of linked articles on Wikipedia pages.
3,342 users
Wikipedia Context Menu Search
Search for highlighted text on Wikipedia via the context menu.
2,934 users
Random Unusual Wikipedia new tab
Redirects to a random unusual Wikipedia page when you open a new tab, because when you're opening a new tab you're looking for a distraction and that distraction might as well be a weird fact. Or show random Cognitive Bias, or Philosophical concept.
72 users
Tree Style Tab
Show tabs like a tree.
129,519 users
New Tab Override (WebExtension)
New Tab Override brings back the ability to change the page which is shown when opening a new tab.
105,620 users
Tab Auto Refresh
Automatically refresh tabs based on custom time intervals
53,720 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
81,669 users