Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- Google Chrome
- Python
- Thunderbird
- Vim
- Sublime Text
- GNU Emacs
- Pluma
- LibreOffice
- Mozilla Firefox
- LibreOffice - Writer
- ONLYOFFICE




Browse 1,831 Mozilla Firefox Plugins, Add-ons and extension on AlternativeTo including popular Mozilla Firefox options.







AdBlitz automatically skips skippable ads and accelerates non-skippable ones, ensuring you enjoy uninterrupted content seamlessly. Remember, it's not an ad blocker.

Mindomo is the easiest online software for creating mind maps, concept maps, outlines and various other types of diagrams. The following features make it the perfect choice both for business and education:




DeArrow is an open source browser extension for crowdsourcing better titles and thumbnails on YouTube. The goal is to make titles accurate and reduce sensationalism. No more arrows, ridiculous faces, and no more clickbait.


Shodan is a search engine that lets you find specific computers (routers, servers, etc.) using a variety of filters. Some have also described it as a public port scan directory or a search engine of banners.


Linguist is a browser extension that translates pages and text, potentially replacing your current translation service. It offers real-time page translation, selected text translation, manual input translation, and a dictionary to save important translations.




Amplenote allows you to take notes and link those notes to functional task and contacts lists for seamless project management. It supports integration with Google and Outlook calendars to schedule tasks and allows e-mail integration as well.




linkding is a simple bookmark service that you can host yourself. It supports managing bookmarks, categorizing them with tags and has a search function. It provides a bookmarklet for quickly adding new bookmarks while browsing the web.

Enpass offers you freedom from remembering too many passwords and other important credentials. It secures them in one place by your master password and makes them accessible anywhere and everywhere - on your smartphones, tablets, or desktops.




Open source solution to protect your personal email address. Generous free plan with uncapped bandwidth and infinite sends/replies, self-hostable, lot of powerful features, open roadmap, you can count on SimpleLogin to guard your email inbox.




StayFree is a self control, productivity and phone addiction controller app that allow you to show how much time you spend on your smartphone and helps you focus by restricting the usage of apps. You can set usage limits for your apps and receive alerts when exceeding those...




Iridium (former YouTube Plus) is an extension built to improve the user experience on the new YouTube Material layout. As of January of 2019, the development is discontinued. Firefox and Chrome Versions are out of date and you must manually sideload the addon.




Convert files like images, videos, documents, audio and more to other formats with this free and fast online converter.


RoboForm is a robust password management software that simplifies the task of securely storing and syncing passwords across various devices and browsers, including Firefox, Chrome, Safari, Opera, Edge, Android, and iOS.




Delays access to apps and websites with a deep breath animation, disrupting unconscious social media habits and syncing mindful moments to HealthKit for improved reflection.




This third-party website gives you better insight into the Steam platform and everything in its database.




Group YouTube subscriptions into the YouTube folder. Video Deck for Youtube. Mark as watched videos. Filter and sort YouTube videos.




This add-on allows users to prevent websites from using the Javascript <canvas> API to fingerprint them. Users can choose to block the <canvas> API entirely on some or all websites (which may break some websites) or just block or fake its fingerprinting-friendly...


Privacy-focused search engine offering web and image search with no data tracking, no personalized profiling, encrypted access, and family-friendly filtered results.



Midnight Lizard web-extension for Google Chrome™ and Mozilla Firefox™ provides custom color schemes for all websites.




Protect your web history, feel safer on public Wi-Fi, and limit ad tracking by increasing the security of your network connection.




Wikiwand is a modern interface for web and mobile, that optimizes Wikipedia's amazing content for a quicker and significantly improved reading experience.




Open source browser extension for finding, editing, exporting, optimizing, and managing SVG content.



