head to head · open source
Langflow vs HeyForm
Langflow has 154,943 GitHub stars, 10,108 forks, 1,056 open issues and last shipped yesterday. HeyForm has 8,977 stars, 708 forks, 10 open issues and last shipped 9 days ago. Langflow leads on adoption by 1,626% (154,943 vs 8,977 stars). Langflow is written in Python under MIT; HeyForm is written in TypeScript under AGPL-3.0. Langflow has attracted 7% as many forks as stars, HeyForm 8%. 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 | HeyForm | |
|---|---|---|
| GitHub stars | ★ 155K | ★ 9.0K |
| License | MIT | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-09 |
| Forks | ⑂ 10K | ⑂ 708 |
| 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 HeyForm if
- You want the HeyForm feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and HeyForm 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 HeyForm
HeyForm is an open source form builder written in TypeScript and released under the GNU Affero General Public License v3.0. It lives in the JavaScript and TypeScript ecosystem, and its repository is organised as a monorepo of packages: a Node server, a React webapp, a form renderer, an embeddable JavaScript library, and shared utilities and type definitions used by both the server and the webapp. The project describes itself as an open source form builder built for small business success, and it is positioned as an open alternative to Typeform.
read the full HeyForm overview →
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Frequently asked questions
Is Langflow or HeyForm more popular?
Langflow has 154,943 GitHub stars and HeyForm has 8,977. Langflow has the larger community by that measure.
Are Langflow and HeyForm free?
Both are open source. Langflow is licensed under MIT and HeyForm under AGPL-3.0. Neither carries a licence fee.
What is the difference between Langflow and HeyForm?
Langflow is written in Python and HeyForm 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 HeyForm?
Choose Langflow if you want the larger community (154,943 stars) or its MIT licence terms. Choose HeyForm if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.