What are the best Web Extension repositories on GitHub?

The top-ranked Web Extension open source repositories include extension-js/extension.js, pnlpal/dictionariez, quoid/userscripts, tracked and evaluated by community adoption, stars, and code commits.

How do I find trending Web Extension open source tools?

Browse this curated Web Extension directory to monitor real-time GitHub star velocity, latest code releases, and rising developer tools updated daily.

Are Web Extension GitHub repositories free and open source?

Most Web Extension projects listed here are distributed under open source licenses (such as MIT, Apache 2.0, or GPL). Always check individual project repositories for exact license terms.

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Web Extension GitHub Repositories (2026) · Open Source Tools

Discover the best Web Extension open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.

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9 matching projects · updated Nov 12, 2026 How we rank ↗

#1 TRENDING extension-js/extension.js TypeScript 2020

The cross-browser extension framework.

◇ browser-extension ◇ build-tool ◇ chrome-extension ◇ chrome-extensions

144 ↑ +10 today

5.2K

#2 TRENDING pnlpal/dictionariez JavaScript 2019

📚 A customizable dictionary extension that supports double-click lookups in 20+ languages, 1000+ dictionaries, text-to-speech, translation and Anki integration.

◇ anki ◇ browser-extension ◇ chrome-extension ◇ crx

43 ↑ +3 today

682