Best Open Source Browser Extensions

Cloud-based bookmark manager that lets you save, categorize, and access your web favorites from any device with smart organization features

Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.

A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Full-featured browser extension for translating web pages, text, and subtitles with offline mode, personal dictionary, and custom translator support.

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.