Cost / License
- Free
- Proprietary
Platforms
- Microsoft Edge
- Google Chrome
- Firefox




Browse 1,867 Mozilla Firefox Plugins, Add-ons and extension on AlternativeTo including popular Mozilla Firefox options.





Add context to your analytics. The Signal Flare chrome extension puts shared notes into all of your charts in Google Analytics and Search Console.




Blocks bad websites and prevents phishing without tracking your browsing activity.


If you go to a video on YouTube while not logged in, this extension enables you to get past the warning, and straight to the video. Perfect for watching NSFW YouTube content anonymously.
Organize your tabs into workspaces. Switch between workspaces to change which tabs are displayed at the moment.


Sends news stories, blogs, and web articles to e-readers by converting pages into ad-free e-book formats, enabling offline reading and Kindle note features.



Chrome and Firefox extension to make Notion more productive and less distractive. Add 20+ customizations to Notion like sticky outline, small text & full width by default,scroll to top button, hide slash command menu, and more.



Re-enable the possibility to use the context menu, copy, paste, and text selection on sites that prevent them.
Word Counter extension/add-on aims to provide an instants text stats for letters/words of any web page you visit via clean and intuitive interface and with just One-Click. Word Counter might be useful for writers, bloggers, website designers, and also for language learning.

Flutin is an online live streaming platform that offers ultimate streaming features like split screen live streaming, customization, sub account creation, and much more.

tidytube is an open-source web extension which allows you to remove parts of Youtube's UI. Users are able to remove elements from the search page, homepage as well as blocking shorts from playing. Some parts of the extension will not work in all languages at the moment.



The Unstream apps detect what's playing in Spotify, Apple Music or any music player in your browser, and shows the best ways to support that artist, right in your menu bar. Save artists you want to support later and get alerts when they release new music.




Protect your crypto assets before it's too late.
Look for the green shield when visiting verified crypto sites. Block all known phishing sites, pages and social media accounts.


A browser extension that automatically sources the best available and valid voucher codes and presents them at the checkout page, so you never have to search for a voucher code again.




Easily make changes to any website's design and try your ideas in seconds with a visual editor that generates code for you. Say goodbye to coding and hello to speed, joy, and stunning designs in just a few clicks.



RenderDiff compares the initial HTML source code of any webpage with its JavaScript-rendered DOM - and highlights every SEO-relevant difference.



With PassSecurium™ you can access your password vault, and manage passwords securely and conveniently. Besides standard functions (create / view / edit / delete passwords) PassSecurium™ offers an integrated password generator with selectable complexity.




This Chrome / Firefox extension measures page load time and displays it in the toolbar. Navigation Timing API is used for precise measurement.


Select any word or text in over 100 languages and click the option to either translate or convert text to speech or download audio.


Pink Lemon is a browser extension that automatically finds and displays lower hotel rates across popular booking sites.



RTCjs (Real Time Chart) is a JavaScript library designed for real time applications including engineering solutions and plotting any other parameters. It's size is small making it fastest to load. It is designed for quickest implementation and consists of functions that are...



The Base64 Tool is a versatile binary-to-text encoding and decoding tool. It enables the conversion of binary image data into a series of printable ASCII characters, allowing easy transmission and representation.