head to head · open source
rea vs react-cosmos
rea has 427,743 GitHub stars, 106,451 forks, 70 open issues and last shipped yesterday. react-cosmos has 8,694 stars, 383 forks, 5 open issues and last shipped 6 days ago. rea leads on adoption by 4,820% (427,743 vs 8,694 stars). rea is written in TypeScript under MIT; react-cosmos is written in TypeScript under MIT. rea has attracted 25% as many forks as stars, react-cosmos 4%. rea was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| rea | react-cosmos | |
|---|---|---|
| GitHub stars | ★ 428K | ★ 8.7K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-04 | 2026-10-30 |
| Forks | ⑂ 106K | ⑂ 383 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick rea if
- You weight community size — 428K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick react-cosmos if
- You want the react-cosmos feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and react-cosmos fits your workflow better
About rea
English · 简体中文 · 繁體中文 · 日本語 · 한국어 · Türkçe · Русский · Tiếng Việt · ไทย · Deutsch · Español · Français · Українська · Polski · Português (Brasil) · العربية · فارسی REA: Reverse Engineer Anything One MCP for reverse engineering across binaries, applications, and runtime behavior. See a feature you like. Understand how it works, down to the binary level. Website · Guides · Showcases Quick start · How REA works · What you can analyze · Showcases · FAQ · Documentation npx rea agents setup Join the Reverse Engineering Community Discord · Q&A · Show and Tell See a feature in an app that you want in your own product?…
About react-cosmos
React Cosmos Getting Started Choose one of the Getting Started guides to dive into React Cosmos. Check out the Next.js integration to get started with React Server Components. Visit reactcosmos.org/docs to view the full documentation. Community To chat with other community members you can join the React Cosmos Discord. You can also ask questions, voice ideas, and share your projects on GitHub Discussions. Our Code of Conduct applies to all React Cosmos community channels. Contributing Please see our CONTRIBUTING.md. Become a Sponsor to support the ongoing development of React Cosmos. Live Demo Visit…
read the full react-cosmos overview →
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Frequently asked questions
Is rea or react-cosmos more popular?
rea has 427,743 GitHub stars and react-cosmos has 8,694. rea has the larger community by that measure.
Are rea and react-cosmos free?
Both are open source. rea is licensed under MIT and react-cosmos under MIT. Neither carries a licence fee.
What is the difference between rea and react-cosmos?
rea is written in TypeScript and react-cosmos in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, rea or react-cosmos?
Choose rea if you want the larger community (427,743 stars) or its MIT licence terms. Choose react-cosmos if its feature set, stack or MIT licence fits better. Both are self-hostable.