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Best Open Source extension Libraries

A curated list of the most popular GitHub repositories tagged with extension. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1zalmoxisus/redux-devtools-extension

Redux DevTools extension.

13,486JavaScript
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#2MetaMask/metamask-extension

:globe_with_meridians: :electric_plug: The MetaMask browser extension enables browsing Ethereum blockchain enabled websites

13,078TypeScript
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#3MODSetter/SurfSense

Connect any LLM to your internal knowledge sources and chat with it in real time alongside your team. OSS alternative to NotebookLM, Perplexity, and Glean. Join our Discord: https://discord.gg/ejRNvftDp9

13,002Python
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#4crimx/ext-saladict

🥗 All-in-one professional pop-up dictionary and page translator which supports multiple search modes, page translations, new word notebook and PDF selection searching.

12,990TypeScript
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#5nanobrowser/nanobrowser

Open-Source Chrome extension for AI-powered web automation. Run multi-agent workflows using your own LLM API key. Alternative to OpenAI Operator.

12,268TypeScript
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#6fishjar/kiss-translator

A simple, open source bilingual translation extension & Greasemonkey script (一个简约、开源的 双语对照翻译扩展 & 油猴脚本)

8,826JavaScript
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#7lencx/Noi

🚀 Less chaos. More flow.

8,740TypeScript
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