head to head · open source
Langflow vs devenv
Langflow has 155,482 GitHub stars, 10,199 forks, 1,056 open issues and last shipped today. devenv has 7,731 stars, 577 forks, 388 open issues and last shipped 2 days ago. Langflow leads on adoption by 1,911% (155,482 vs 7,731 stars). Langflow is written in Python under MIT; devenv is written in Rust under Apache-2.0. Langflow has attracted 7% as many forks as stars, devenv 7%. 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 | devenv | |
|---|---|---|
| GitHub stars | ★ 155K | ★ 7.7K |
| License | MIT | Apache-2.0 |
| Written in | Python | Rust |
| Last push | 2026-10-11 | 2026-10-09 |
| Forks | ⑂ 10K | ⑂ 577 |
| 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 devenv if
- You want the devenv feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and devenv 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 devenv
devenv is a fast, declarative, reproducible, and composable way to define developer environments on Nix, aimed at developers and teams who want toolchains, services, and processes declared as code rather than handed down as setup instructions.
read the full devenv overview →
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Frequently asked questions
Is Langflow or devenv more popular?
Langflow has 155,482 GitHub stars and devenv has 7,731. Langflow has the larger community by that measure.
Are Langflow and devenv free?
Both are open source. Langflow is licensed under MIT and devenv under Apache-2.0. Neither carries a licence fee.
What is the difference between Langflow and devenv?
Langflow is written in Python and devenv in Rust. 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 devenv?
Choose Langflow if you want the larger community (155,482 stars) or its MIT licence terms. Choose devenv if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.