WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
8,929 users
Google Page Translate
Adds a toolbar button to open Google Page Translate for the current tab.
8,928 users
Mobile emulator
Smartphone emulator on computer very realistic with several models to test mobile websites.
8,876 users
Progressive Web Apps for Firefox
A tool to install, manage and use Progressive Web Apps (PWAs) in Mozilla Firefox
8,850 users
You.com | The Search Engine You Control
Sets Firefox's default search engine to You.com
8,850 users
Activate Reader View
This add-on adds a button to the toolbar. Clicking on it activates the Reader View even if the icon in the address bar is not present.
8,847 users
Private Bookmarks
Enables a password-protected bookmark folder.
8,814 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.
8,749 users
Profile Switcher for Firefox
Create, manage and switch between browser profiles seamlessly.
8,717 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.
8,713 users
Alitools shopping assistant
Auto-find & apply AliExpress ™ promo codes, price history, seller rating, similar products, find item by picture
8,711 users
Chameleon
Spoof your browser profile. Includes a few privacy enhancing options. A WebExtension port of Random Agent Spoofer.
8,685 users
8,659 users
Bookmarks clean up
Find and remove duplicated bookmarks manually and in batches, get rid of broken bookmark links and empty folders.
8,658 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
8,656 users
Tab Counter
Add a badge to the toolbar that shows the number of currently open tabs in a window or all windows.
8,628 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.
8,611 users
Highlighter + Notes
Add Highlights and Notes to a Web Page
8,586 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
8,584 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.
8,580 users
8,571 users
Text Link & Google Translate
Non linked URL open with double click. and Google translate.
8,506 users
Video Downloader for Reddit - Redditsave
A powerful reddit video downloader with sound powered by redditsave.com
8,499 users
Twitter Video Downloader | Fast and Free
Download Twitter Videos - Save any Twitter video and gif with one simple click. free, fast & easy to use.
8,498 users
MAL-Sync
MAL-Sync enables automatic episode tracking between MyAnimeList/Anilist/Kitsu/Simkl and multiple anime streaming websites.
8,496 users