head to head · open source
Langflow vs mex
Langflow has 155,157 GitHub stars, 10,129 forks, 1,056 open issues and last shipped today. mex has 1,684 stars, 130 forks, 53 open issues and last shipped yesterday. Langflow leads on adoption by 9,114% (155,157 vs 1,684 stars). Langflow is written in Python under MIT; mex is written in TypeScript under MIT. Langflow has attracted 7% as many forks as stars, mex 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 | mex | |
|---|---|---|
| GitHub stars | ★ 155K | ★ 1.7K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-23 | 2026-09-22 |
| Forks | ⑂ 10K | ⑂ 130 |
| 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 mex if
- You want the mex feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and mex 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 mex
MEX is an MIT licensed, TypeScript based tool that gives engineering teams and their coding agents a shared project memory kept as readable Markdown inside the repository and shared through ordinary Git commits, pushes, and pulls.
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Frequently asked questions
Is Langflow or mex more popular?
Langflow has 155,157 GitHub stars and mex has 1,684. Langflow has the larger community by that measure.
Are Langflow and mex free?
Both are open source. Langflow is licensed under MIT and mex under MIT. Neither carries a licence fee.
What is the difference between Langflow and mex?
Langflow is written in Python and mex 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 mex?
Choose Langflow if you want the larger community (155,157 stars) or its MIT licence terms. Choose mex if its feature set, stack or MIT licence fits better. Both are self-hostable.