BlockSite
BlockSite is an extension, which automatically blocks websites of your choice. Additionally, this extension will disable all hyperlinks to these websites, by just displaying the link text without the clicking functionality.
32,987 users
Video Downloader for Facebook
Facebook Video Downloader - Download Facebook Videos. Download Videos directly from Facebook in HD quality with one simple click.
32,767 users
Momentum
Replace your new tab page with an all-in-one productivity dashboard. Featuring daily inspiration, focus reminders, to-do lists, local weather info, and more!
32,415 users
Youtube Audio
Stream just the audio from YouTube to save bandwidth and battery life
32,299 users
uBlacklist
Blocks sites you specify from appearing in Google search results
31,911 users
RetailMeNot Deal Finder™️
RetailMeNot Deal Finder™️ automatically finds the best promo codes and cash back as you shop online.
31,609 users
Custom Scrollbars
Give Firefox a personal touch with customized scrollbars!
31,599 users
Buster: Captcha Solver for Humans
Save time by asking Buster to solve captchas for you.
31,529 users
TubeBuddy
The #1 Rated Firefox Extension for YouTube Creators.
31,331 users
New Tab Homepage
A very simple tabbed browsing extension that loads your homepage when you open a new tab. If you have multiple homepages, the first is chosen.
31,155 users
Mailvelope
Enhance your webmail provider with end-to-end encryption. Secure email communication based on the OpenPGP standard.
30,986 users
Ezy Speed Test & Custom Web Search
Add the Ezy Speed Test & Custom Web Search extension and click the favicon on your toolbar to access a speed test site & Yahoo® search.
30,531 users
Indie Wiki Buddy
Helping you discover quality, independent wikis! When visiting a Fandom wiki, Indie Wiki Buddy redirects or alerts you of independent alternatives. It also filters search engine results. BreezeWiki is also supported, to reduce clutter on Fandom.
30,457 users
30,345 users
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
30,301 users
Privacy Extension For WhatsApp™ Web
The Privacy Extension For WhatsApp™ Web hides your messages from unwanted glimpses until you hover over them. In the search bar, you can disable the blur effect on all messages manually and specify what elements to blur.
30,273 users
Wayback Machine
Welcome to the Official Internet Archive Wayback Machine Browser Extension! Go back in time to see how a website has changed through the history of the Web. Save websites, view missing 404 Not Found pages, or read archived books & papers.
30,047 users
Strict Pop-up Blocker
Quickly toggle between blocking all pop-up windows and allowing some pop-ups
29,826 users
Český slovník pro kontrolu pravopisu
Slovník pro kontrolu pravopisu pro aplikace Mozilla
29,590 users
Kee - Password Manager
Save time, sign in easily to websites and avoid the hassle of forgotten password resets. Protect yourself and people you know from the nightmare of your accounts being hacked.
29,527 users
Canadian English Dictionary
For some reason, Mozilla doesn't have a Canadian localization team, but I know that even the British dictionary doesn't quite cut it for the truly patriotic.
29,411 users
Dark Mode
Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.
29,403 users
29,396 users
Runet Censorship Bypass
This extension allows bypassing censorship of Russian government (i.e. only sites blocked by RosKomNadzor, RKN), giving you access to libraries, encyclopedias, oppositional political sites, and to innocent sites blocked to many reasons.
29,369 users
ChatGPT for Google
Display ChatGPT response alongside Google Search results
29,326 users