Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
21,814 users
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
72,728 users
Tab2QR
Send the page you are currently viewing to your mobile device. QR codes are generated instantly in browser and never leave your computer. Implemented with WebExtensions API and compatible with Firefox 57+.
5,262 users
Clippings
Save frequently-entered text for pasting later.
38,231 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,122,628 users
Web Security
Web Security actively protects you from malware, tampered websites or phishing sites that aim to steal your personal data.
254,671 users
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
269,461 users
Privacy Badger
Protects your privacy by blocking spying ads and invisible trackers.
406,906 users
Worldwide Radio
Listen to live radio stations from around the world!
3,172 users
[Dark Theme] - Native Dark
Native Dark mainly replaces the default themes of Firefox, because the light theme was adaptive in the titlebar and not the tabs. It allows for the same adaptive titlebar as the default light theme but combines the aesthetic of the dark theme's tabs.
2,888 users
Envify
Colorify tabs with current env
972 users
Session Sync
Save sessions as bookmarks and sync them through Firefox Sync. Advanced Session Manager: edit, save, change, restore. But it can also be your best Bookmark Manager
4,296 users
Adblock Plus
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
11,945,712 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,845,979 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,306,226 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,497,751 users