Open Source Browser Extensions using JavaScript
A curated collection of the best open source add-ons that extend browser functionality for productivity or utility. using JavaScript.
Free, private screen recording for Chrome
Stars
18,894Last commit
9 days agoLicense
GPL-3.0
Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.
Open Source Alternative to:
Fast grammar checking that respects your privacy
Stars
Stars growing over the last 30 days17,365Last commit
9 hours agoLicense
Apache-2.0
Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.
Open Source Alternative to:
Intercept, modify, and debug HTTP(S) requests effortlessly
Stars
6,761Last commit
17 hours agoLicense
AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing
Open Source Alternative to:
System-wide ad-blocking and privacy protection, no extensions needed
Stars
4,343Last commit
8 hours agoLicense
MIT
Free, open-source desktop app that blocks ads, trackers, and surveillance scripts across all browsers and apps on Windows, macOS, and Linux.
Open Source Alternative to:
Privacy-focused translation with offline capabilities
Stars
1,083Last commit
2 months agoLicense
BSD-3-Clause
Full-featured browser extension for translating web pages, text, and subtitles with offline mode, personal dictionary, and custom translator support.
Open Source Alternative to:
Organize and access your bookmarks seamlessly in the cloud
Stars
80Last commit
3 months agoLicense
AGPL-3.0
Cloud-based bookmark manager that lets you save, categorize, and access your web favorites from any device with smart organization features
Open Source Alternative to:
Sent – A unified API for sending messages across SMS, RCS, and apps like WhatsApp.
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