Firefox Addon GitHub Repositories (2026) · Open Source Tools

Toggl Track browser extension for Chrome and Firefox

A browser extension that helps you track time, analyze your habits and block addictive sites

Changes the colour of Firefox theme to match the website’s appearance.

Local-first password manager with direct device-to-device sync

Browser extension that removes the premium blur, banners and ads on Studocu and Studeersnel, and downloads documents as PDF

Download M3U8 live streams to the local disk

Browser extension and iOS app that spoofs your gps, geolocation & timezone, and auto-syncs to your VPN. Firefox, Chrome, Edge, Brave & Safari.

The open-source and privacy-first alternative to Honey. Caramel The Trusted Alternative To Honey For Finding Coupons

Firefox/Chrome Extension to provide bullet chatting (Danmaku) on YouTube Live, like niconico or bilibili.

LockedIn is a Browser extension that hides all distractions: Shorts, homepage feed, recommendations, explore, and more. It features a miniml Popup UI with simple toggles to create your perfect, distraction-free viewing environment.

A two-panel bookmarks manager which is similar to the well-known Total Commander.

Open-source translation extension for Chrome and Firefox with text, page, PDF, OCR, subtitles, and live dubbing.

A customizable read mode web extension.

Debloated fork of the extension "I don't care about cookies"