FantasyPros: Win your Fantasy League
Get expert advice for your fantasy team from any website
8,843 users
Alitools shopping assistant
Auto-find & apply AliExpress ™ promo codes, price history, seller rating, similar products, find item by picture
8,809 users
Slovak spell checking dictionary
Slovak spell checking dictionary for Mozilla applications (based on the "open-source" dictionaries by Zdenko Podobný).
8,803 users
Google Page Translate
Adds a toolbar button to open Google Page Translate for the current tab.
8,801 users
Highlighter + Notes
Add Highlights and Notes to a Web Page
8,762 users
signTextJS plus
window.crypto.signText replacement plus enhancements
8,742 users
8,696 users
Bypass Paywalls for Firefox
Bypass Paywalls of over 200 news sites and more
8,688 users
Avast SecureLine VPN
Control your Avast SecureLine VPN from the comfort of your browser. Easily turn your VPN on and off, or change your server location, with our simple but powerful extension. All you need is Avast SecureLine VPN with a valid license.
8,683 users
Privacy | Protect Your Payments
Privacy's Firefox add-on allows you to generate a new virtual card number with 1-click on any checkout page. Keep your payment info safe from data breaches, shady merchants, and sneaky subscription billing.
8,683 users
Hide My IP Free
Hide Your IP Address and Unblock Websites for Free with the Hide My IP proxy and VPN IP network. Thousands of IPs around the world to choose from. Access your favorite streaming sites by changing your IP location. No ads or limitations.
8,631 users
Video Downloader for Reddit - Redditsave
A powerful reddit video downloader with sound powered by redditsave.com
8,627 users
Html Validator
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon For Firefox 56, use 0.974 (see all versions below). For Firefox 57, see Web Extensions.
8,609 users
Bookmarks clean up
Find and remove duplicated bookmarks manually and in batches, get rid of broken bookmark links and empty folders.
8,600 users
Shortkeys (Custom Keyboard Shortcuts) for Firefox
Easily customizable custom keyboard shortcuts for Firefox. To configure this addon go to Addons (ctrl+shift+a) ->Shortkeys ->Options. Report issues here (please specify that the issue is found in Firefox): https://github.com/mikecrittenden/shortkeys
8,593 users
Tab Counter
Add a badge to the toolbar that shows the number of currently open tabs in a window or all windows.
8,574 users
MAL-Sync
MAL-Sync enables automatic episode tracking between MyAnimeList/Anilist/Kitsu/Simkl and multiple anime streaming websites.
8,571 users
8,537 users
Adaware AdBlock
By blocking annoying ads and nosy trackers, Adaware AdBlock nearly doubles your browsing speed! And with the most robust antivirus-level cloud-scanning technology of any ad blocker on the market, you’ll be safe from the latest cyber-threats.
8,513 users
Session Sync
Save sessions as bookmarks and access them across devices. Advanced Session Manager: edit, save, change, restore. It can also be your best Bookmark Manager
8,497 users
Refined GitHub
Simplifies the GitHub interface and adds many useful features.
8,489 users
Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
8,453 users
Mobile emulator
Smartphone emulator on computer very realistic with several models to test mobile websites.
8,441 users
Dark Mode for Wikipedia
Dark mode for English Wikipedia.
8,407 users
Bulk Image Downloader
Integrates Bulk Image Downloader (a Windows only app that must be installed separately) with FireFox. Download full sized images from almost any thumbnailed web gallery. Supports most popular image hosts such as imagevenue, imagefap, flickr, etc.
8,380 users