head to head · open source
Langflow vs react-cosmos
Langflow has 156,307 GitHub stars, 10,321 forks, 1,056 open issues and last shipped today. react-cosmos has 8,694 stars, 383 forks, 5 open issues and last shipped 5 days ago. Langflow leads on adoption by 1,698% (156,307 vs 8,694 stars). Langflow is written in Python under MIT; react-cosmos is written in TypeScript under MIT. Langflow has attracted 7% as many forks as stars, react-cosmos 4%. Langflow 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
| Langflow | react-cosmos | |
|---|---|---|
| GitHub stars | ★ 156K | ★ 8.7K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-10-30 |
| Forks | ⑂ 10K | ⑂ 383 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langflow if
- You weight community size — 156K stars and counting
- You want the MIT license terms
- Your stack matches Python
- 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 Langflow
Langflow is a powerful platform for building and deploying AI powered agents and workflows. It provides developers with both a visual authoring experience and built in API and MCP servers that turn every workflow into a tool that can be integrated into applications built on any framework or stack. Langflow comes with batteries included and supports all major LLMs, vector databases and a growing library of AI tools. ✨ Highlight features Visual builder interface to quickly get started and iterate. Source code access lets you customize any component using Python. Interactive playground to immediately test and…
read the full Langflow overview →
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 Langflow or react-cosmos more popular?
Langflow has 156,307 GitHub stars and react-cosmos has 8,694. Langflow has the larger community by that measure.
Are Langflow and react-cosmos free?
Both are open source. Langflow is licensed under MIT and react-cosmos under MIT. Neither carries a licence fee.
What is the difference between Langflow and react-cosmos?
Langflow is written in Python 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, Langflow or react-cosmos?
Choose Langflow if you want the larger community (156,307 stars) or its MIT licence terms. Choose react-cosmos if its feature set, stack or MIT licence fits better. Both are self-hostable.