British English Dictionary (Marco Pinto)
A fork of Mark Tyndall's add-on, based on David Bartlett's British Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey. V3.3.2 has 140 000+ new words and also fixes.
206,788 users
Language: Norsk Bokmål (Norwegian Bokmål)
Firefox Language Pack for Norsk Bokmål (nb-NO) – Norwegian Bokmål
198,786 users
Language: Dansk (Danish)
Firefox Language Pack for Dansk (da) – Danish
197,920 users
Language: Indonesia (Indonesian)
Firefox Language Pack for Indonesia (id) – Indonesian
195,250 users
Language: 한국어 (Korean)
Firefox Language Pack for 한국어 (ko) – Korean
194,402 users
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
193,520 users
Browsing Protection by F-Secure
Extension for protecting encrypted browsing with security products by F-Secure.
187,224 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
187,070 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.
185,737 users
Language: Türkçe (Turkish)
Firefox Language Pack for Türkçe (tr) – Turkish
183,234 users
Language: Български (Bulgarian)
Firefox Language Pack for Български (bg) – Bulgarian
182,144 users
German Dictionary (Switzerland)
Dictionary with Swiss variants of German words for spellchecking in Firefox.
179,670 users
German Dictionary, extended for Austria
German dictionary ("new" orthography) for spellchecking in Firefox, extended with Austrian words
179,302 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.
177,080 users
Language: Slovenčina (Slovak)
Firefox Language Pack for Slovenčina (sk) – Slovak
176,976 users
Pinterest Save Button
Save your favorite ideas online so you can easily get back to them later.
171,876 users
Language: ไทย (Thai)
Firefox Language Pack for ไทย (th) – Thai
167,612 users
Hoxx VPN Proxy
Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.
164,402 users
Language: עברית (Hebrew)
Firefox Language Pack for עברית (he) – Hebrew
163,720 users
162,819 users
Language: Cрпски (Serbian)
Firefox Language Pack for Cрпски (sr) – Serbian
162,396 users
Language: Lietuvių (Lithuanian)
Firefox Language Pack for Lietuvių (lt) – Lithuanian
162,339 users
Maps Assist & Custom Web Search
Install the Maps Assist & Custom Web Search extension to get directions by clicking the favicon on the toolbar & enjoy Yahoo® search from your browser.
162,041 users
Language: Slovenščina (Slovenian)
Firefox Language Pack for Slovenščina (sl) – Slovenian
161,881 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
161,578 users