Tree Style Tab
Show tabs like a tree.
203,157 users
Language: Български (Bulgarian)
Firefox Language Pack for Български (bg) – Bulgarian
200,462 users
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
200,034 users
Browsing Protection by F-Secure
Extension for protecting encrypted browsing with security products by F-Secure.
199,067 users
Language: Türkçe (Turkish)
Firefox Language Pack for Türkçe (tr) – Turkish
198,168 users
German Dictionary (Switzerland)
Dictionary with Swiss variants of German words for spellchecking in Firefox.
196,930 users
German Dictionary, extended for Austria
German dictionary ("new" orthography) for spellchecking in Firefox, extended with Austrian words
196,166 users
Video Downloader professional
- download and save videos embedded into a website to your hard disk - add youtube, vimeo and other videos easily to your video list - supports up to 4k videos
193,442 users
Language: Slovenčina (Slovak)
Firefox Language Pack for Slovenčina (sk) – Slovak
193,279 users
Avast Online Security & Privacy
Secure your Mozilla Firefox browser against real-time online threats, trackers, and scams. We’ll check every site you visit, from Facebook to your bank, so nothing puts you or your data at risk. Join a growing community of 400 million Avast users.
189,225 users
React Developer Tools
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the "⚛️ Components" or "⚛️ Profiler" tab.
188,917 users
Language: ไทย (Thai)
Firefox Language Pack for ไทย (th) – Thai
183,602 users
Pinterest Save Button
Save your favorite ideas online so you can easily get back to them later.
183,449 users
181,171 users
Video Background Play Fix
Some sites may not work with Firefox for Android video background play feature. This add-on provides a quick fix by blocking the Page Visibility API and the Fullscreen API.
179,186 users
Language: עברית (Hebrew)
Firefox Language Pack for עברית (he) – Hebrew
179,078 users
Language: Cрпски (Serbian)
Firefox Language Pack for Cрпски (sr) – Serbian
179,000 users
Language: Lietuvių (Lithuanian)
Firefox Language Pack for Lietuvių (lt) – Lithuanian
177,355 users
Language: Slovenščina (Slovenian)
Firefox Language Pack for Slovenščina (sl) – Slovenian
177,255 users
174,351 users
Hoxx VPN Proxy
Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.
174,040 users
Language: Eesti (Estonian)
Firefox Language Pack for Eesti (et) – Estonian
173,510 users
Language: فارسی (Persian)
Firefox Language Pack for فارسی (fa) – Persian
172,562 users
FireShot: Full Web Page Screenshots (♥♥♥♥♥)
FireShot makes full page screen captures - http://bit.ly/RlBQMV Screenshots are quickly captured and: ― Saved as Image / PDF with links and text ― Sent to clipboard ― Printed Capture all open tabs or provide a list of the URLs for grabbing
167,921 users
Language: Hrvatski (Croatian)
Firefox Language Pack for Hrvatski (hr) – Croatian
167,356 users