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).
12,321,245 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,977,535 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,364,121 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,436,862 users
FoxyTab
Collection of Tab Related Actions e.g. Duplicate, Close Duplicates, Close to the Left, Copy Title, Merge Windows, Save as PDF, Copy Urls Tab/All/Left/Right, Host keep/close/close other, Sort by URL/Title, Asce/Desc, Move, Reload, Reload Timer
16,011 users
Swift Selection Search
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
5,920 users
Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
21,361 users
Emoji Cheatsheet
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook. Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
116,623 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,032,681 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.
199,606 users
Privacy Badger
Protects your privacy by blocking spying ads and invisible trackers.
409,988 users
Firefox Multi-Account Containers
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
129,710 users
Web Security
Web Security actively protects you from malware, tampered websites or phishing sites that aim to steal your personal data.
171,220 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.
199,606 users
YouTube mp3 Downloader
The YouTube mp3 Downloader Add-on includes a Button on any YouTube Page and allows you to convert the YouTube Video to a mp3 with just one click. Compatible with new FireFox Quantum 57+
45,518 users
Amazon Quick Search
Amazon Quick Search Das Addon Amazon Quick Search fügt einen Knopf/Button direkt in den Browser der es ermöglicht Artikel in den gängigsten Shops wie z.b. Otto.de, direkt bei Amazon zu suchen. Der Amazon Quick Search Button leuchtet dann farblich
51,944 users