Top FIREFOX-EXTENSION GitHub Repositories & Tools (2026)

A browser extension that redirects popular sites to alternative privacy friendly frontends

:cloud: Sync your bookmarks privately across browsers and devices

The cross-browser extension framework.

Web extension that adds keyboard shortcuts to Google, YouTube, Github, Amazon, and others (Chrome/Firefox/Edge/Safari)

The first AI agent harness native to the browser. A browser extension that runs a full agent loop where you already work: it drives your tabs, spins up sandboxed compute (JS notebooks, WASM Linux VMs, client-side apps), and shares what it builds peer-to-peer. BYOK, no backend, no telemetry.

m3u8 file downloader library and chrome & firefox extensions/add-on's

FireX Proxy is a browser extension built to unblock websites and provide private browsing.

Turn any website into a native-like Android app