Mozilla Firefox Plugins, Add-ons and extension Page 29 of 72
Browse 1,791 Mozilla Firefox Plugins, Add-ons and extension on AlternativeTo.
- Web Browser
- Free
- Open Source
Cookie-Editor is a browser extension focused on productivity that helps you manage your cookies with the least amount of clicks possible. You can access the list of all the cookies on the current page, create or modify an existing cookie and delete a cookie in a maximum of three...
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- iPhone
- Microsoft Edge
- Google Chrome
- Safari
- Opera
- Firefox



We use artificial intelligence and natural language processing technology to find your writing errors and offer smart suggestions.
Cost / License
- Free
- Open Source
Application type
Alerts
- Discontinued
Platforms
- Online
- Self-Hosted
- Google Chrome
- Drupal
- bbPress
- Wordpress
- LibreOffice
- Apache OpenOffice
- Firefox


+5
Looking for an easy and fun to use language translator app? Then download Mate Translate today. Mate Translate works in 103 languages and can perform text translations, speech-to-text translations and it even synchronizes between all your devices.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Mac
- iPhone
- iPad
- Apple Watch
- Microsoft Edge
- Google Chrome
- Apple Messages
- Opera
- Telegram bot API
- Firefox


+1
“Swiss army knife” helping journalists, fact-checkers, and human rights defenders to save time and be more efficient in their fact-checking and debunking tasks on social networks especially when verifying videos and images.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Google Chrome
- Firefox


+1
The goal of this project is to adds information about the HTTP headers in three ways:

Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online
- Chrome OS
- Google Chrome
- Software as a Service (SaaS)
- Firefox


+7



Keep your Chrome bookmarks on Windows up to date with the Safari bookmarks on your iPhone, iPad, and Mac.
Cost / License
- Free
- Proprietary
Platforms
- Windows
- Google Chrome
- Firefox


+1
Privacy Settings lets you alter Firefox's built-in privacy preferences easily from a toolbar button. This extension aims to keep all the security settings in one place. There are different modes of operation based on your needs.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- BSD
- iPad
- Haiku
- Firefox


Browserpass is a browser extension for zx2c4's pass, a UNIX based password store manager. It allows you to auto-fill or copy to clipboard credentials for the current domain, protecting you from phishing attacks.
Cost / License
- Free
- Open Source (ISC)
Application type
Platforms
- Google Chrome
- Waterfox
- LibreWolf
- Brave
- Chromium
- Mozilla Firefox

Safeguard against malicious URLs by scanning your feed using Norton Safe Web. Protect your friends by advising them of malicious URLs you might have in your feed.
Cost / License
- Free Personal
- Proprietary
Platforms
- Online
- Google Chrome
- Microsoft Edge
- Mozilla Firefox


To-do list maker. Make your Priority to-do list. Put your random thoughts in Laterbox. At the end of the day check how many important works you have done.
Cost / License
- Free
- Proprietary
Application types
Alerts
- Discontinued
Platforms
- Online
- Google Chrome
- Firefox


+5
Hackertab.dev, a handy extension to help developers stay up-to-date with the latest tech happenings. It’s fully customizable, for frontend, backend, full-stack, mobile, data scientists… bref, for all developers.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Online
- Microsoft Edge
- Google Chrome
- Safari
- Opera
- Firefox


+2
Search for a Cause is a search engine that allows you to raise money for charity each time you search. We raise money through a small number of ads included with the search results. The revenue earned from those ads is pooled together and then donated to our partner charities...
Free and open source extension for adding a custom search engine to the list of available search engines in the search bar and URL bar to Firefox or a desktop browser that can use Firefox extensions.
Cost / License
- Free
- Open Source (MPL-2.0)
Platforms
- Mac
- Windows
- Linux
- Firefox



This extensions provides multiple utilities for firefox search engines. You can add a new custom search engine by providing the search url and the icon url. You can also export the search url and icon urls of all the search engines added to Firefox and import them later.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Firefox


+2
You can now select your YouTube layout from 2008-2021 with CustomTube. However, it's not advised to use it with other extensions or scripts to avoid issues. If you have a user agent switcher, disable it on youtube.com to ensure functionality beyond the default 2017 layout.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Online
- Google Chrome
- Firefox


+1
A Quick short-lived email accounts for free.. Protect from getting awful subscriptions which many websites sending very often. And also prevent you from any viruses, malware, etc.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Online
- Google Chrome
- Firefox

Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including open tab next, focus related/last visited tab, protect/lock/faviconize/pin tab, multiple tab handler, tab clicking options, etc.
Cost / License
- Free
- Open Source
Application type
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- Waterfox
- Pale Moon
- Firefox


+3
Add Slice, monetize your browser & get paid for the ads you see. As you browse the internet, Slice will display curated non-intrusive ads. Whenever you see a Slice ad, you receive a monetary reward (Slices).
Cost / License
- Free
- Proprietary
Platforms
- Online
- Google Chrome
- Mozilla Firefox



Polisis visualizes any privacy policy in a simplified interface using artificial intelligence. It allows you to know what the company is collecting about you, what it is sharing, and much more.
Cost / License
- Free
- Proprietary
Application type
Alerts
- Discontinued
Platforms
- Online
- Google Chrome
- Safari
- Firefox



Keep track of how much time you spend on the web, and where you spend it. A toolbar ticker shows the time spent at the current site or the total time spent on the web today.
Cost / License
- Free
- Proprietary
Platforms
- Mozilla Firefox


+2
Browser extension that adds Google Translate's power to translate selected text, phrases, or full web pages while retaining HTML formatting across 100+ languages.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- Mozilla Firefox












































































