head to head · open source
Langflow vs page-spy-web
Langflow has 155,114 GitHub stars, 10,122 forks, 1,056 open issues and last shipped today. page-spy-web has 5,633 stars, 353 forks, 51 open issues and last shipped 4 days ago. Langflow leads on adoption by 2,654% (155,114 vs 5,633 stars). Langflow is written in Python under MIT; page-spy-web is written in TypeScript under MIT. Langflow has attracted 7% as many forks as stars, page-spy-web 6%. 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 | page-spy-web | |
|---|---|---|
| GitHub stars | ★ 155K | ★ 5.6K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-22 | 2026-09-18 |
| Forks | ⑂ 10K | ⑂ 353 |
| 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 page-spy-web if
- You want the page-spy-web feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and page-spy-web 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 page-spy-web
PageSpy is a self hostable remote debugging platform, written in TypeScript by HuolalaTech under the MIT licence, for developers who need to inspect console output and runtime behaviour in Web pages, Mini Programs, React Native apps, and HarmonyOS applications running where a local debugger cannot be attached.
read the full page-spy-web overview →
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Frequently asked questions
Is Langflow or page-spy-web more popular?
Langflow has 155,114 GitHub stars and page-spy-web has 5,633. Langflow has the larger community by that measure.
Are Langflow and page-spy-web free?
Both are open source. Langflow is licensed under MIT and page-spy-web under MIT. Neither carries a licence fee.
What is the difference between Langflow and page-spy-web?
Langflow is written in Python and page-spy-web 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 page-spy-web?
Choose Langflow if you want the larger community (155,114 stars) or its MIT licence terms. Choose page-spy-web if its feature set, stack or MIT licence fits better. Both are self-hostable.