head to head · open source
Langflow vs KeystoneJS
Langflow has 156,266 GitHub stars, 10,311 forks, 1,056 open issues and last shipped yesterday. KeystoneJS has 9,986 stars, 1,262 forks, 138 open issues and last shipped 2 days ago. Langflow leads on adoption by 1,465% (156,266 vs 9,986 stars). Langflow is written in Python under MIT; KeystoneJS is written in TypeScript under MIT. Langflow has attracted 7% as many forks as stars, KeystoneJS 13%. 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 | KeystoneJS | |
|---|---|---|
| GitHub stars | ★ 156K | ★ 10.0K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 10K | ⑂ 1.3K |
| 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 KeystoneJS if
- You want the KeystoneJS feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and KeystoneJS 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 KeystoneJS
Keystone helps you build faster and scale further than any other CMS or App Framework. Describe your schema, and get a powerful GraphQL API & beautiful Management UI for your content and data. No boilerplate or bootstrapping – just elegant APIs to help you ship the code that matters without sacrificing the flexibility or power of a bespoke back end. Contents Usage & Documentation Versioning Code of Conduct Security License Usage & Documentation Keystone 6 is published to npm under the @keystone 6/ namespace. You can find our extended documentation on our website, but some quick links that might be helpful: Read…
read the full KeystoneJS overview →
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Frequently asked questions
Is Langflow or KeystoneJS more popular?
Langflow has 156,266 GitHub stars and KeystoneJS has 9,986. Langflow has the larger community by that measure.
Are Langflow and KeystoneJS free?
Both are open source. Langflow is licensed under MIT and KeystoneJS under MIT. Neither carries a licence fee.
What is the difference between Langflow and KeystoneJS?
Langflow is written in Python and KeystoneJS 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 KeystoneJS?
Choose Langflow if you want the larger community (156,266 stars) or its MIT licence terms. Choose KeystoneJS if its feature set, stack or MIT licence fits better. Both are self-hostable.