Open source firefox-addon projects
Every project in the registry tagged firefox-addon, ranked by real GitHub adoption.
:octocat: Browser extension that simplifies the GitHub interface and adds useful features
Web Extension for saving a faithful copy of a complete web page in a single HTML file
🧩 The Browser Extension Framework
Integrating ChatGPT into your browser deeply, everything you need is here
🧡 Browser extension that simplifies finding and subscribing RSS and RSSHub
Blocks specific sites from appearing in Google search results
Highlight and capture the web in your favorite browser. The official Web Clipper extension for Obsidian.
The cross-browser extension framework.
Reddit Enhancement Suite
Debloated fork of the extension "I don't care about cookies"
Firefox/Chrome browser extension. SmartProxy will automatically enable/disable proxy for the sites you visit, based on customizable patterns.
Privacy-focused translation with offline capabilities
A Chrome 🌐 & Firefox 🦊 extension to discover the latest developer news and tools in one tab!
Related tags
Frequently asked questions
How many open source firefox-addon projects are there?
This registry tracks 13 projects tagged firefox-addon, with 116,172 GitHub stars between them. The most-adopted is refined-github at 32,177 stars.
Are these firefox-addon projects free to use?
Yes — 13 of the 13 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which firefox-addon project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these firefox-addon projects still maintained?
13 of the 13 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.