head to head · open source
Langflow vs msw
Langflow has 154,983 GitHub stars, 10,113 forks, 1,056 open issues and last shipped yesterday. msw has 18,210 stars, 626 forks, 37 open issues and last shipped yesterday. Langflow leads on adoption by 751% (154,983 vs 18,210 stars). Langflow is written in Python under MIT; msw is written in TypeScript under MIT. Langflow has attracted 7% as many forks as stars, msw 3%. 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 | msw | |
|---|---|---|
| GitHub stars | ★ 155K | ★ 18K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 10K | ⑂ 626 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langflow if
- You weight community size — 155K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick msw if
- You want the msw feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and msw fits your workflow better
About Langflow
Langflow is a visual builder platform for designing, testing, and deploying AI agents and retrieval augmented generation (RAG) pipelines. It lives in the Python based generative AI ecosystem and targets developers building intelligent applications. The project provides a low code interface to assemble components—such as LLMs, vector stores, memory modules, and tools—into executable workflows, while also exposing those workflows as APIs or MCP servers for integration into external applications.
read the full Langflow overview →
About msw
Mock Service Worker (MSW) is an MIT licensed TypeScript library that intercepts network requests at the Service Worker level so JavaScript applications and tests can run against mocked APIs without any change to application code, and it is built for front end and full stack JavaScript developers who need consistent API mocking in the browser, in tests, and during local development.
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Frequently asked questions
Is Langflow or msw more popular?
Langflow has 154,983 GitHub stars and msw has 18,210. Langflow has the larger community by that measure.
Are Langflow and msw free?
Both are open source. Langflow is licensed under MIT and msw under MIT. Neither carries a licence fee.
What is the difference between Langflow and msw?
Langflow is written in Python and msw 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 msw?
Choose Langflow if you want the larger community (154,983 stars) or its MIT licence terms. Choose msw if its feature set, stack or MIT licence fits better. Both are self-hostable.