head to head · open source
Langflow vs config-file-validator
Langflow has 155,507 GitHub stars, 10,180 forks, 1,056 open issues and last shipped today. config-file-validator has 515 stars, 117 forks, 12 open issues and last shipped today. Langflow leads on adoption by 30,096% (155,507 vs 515 stars). Langflow is written in Python under MIT; config-file-validator is written in Go under Apache-2.0. Langflow has attracted 7% as many forks as stars, config-file-validator 23%. 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 | config-file-validator | |
|---|---|---|
| GitHub stars | ★ 156K | ★ 515 |
| License | MIT | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-10-05 | 2026-10-05 |
| Forks | ⑂ 10K | ⑂ 117 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langflow if
- You weight community size — 156K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick config-file-validator if
- You want the config-file-validator feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and config-file-validator 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 config-file-validator
cfv is a cross platform command line toolchain, written in Go, that validates syntax, schema compliance, and formatting across 18 configuration file types for developers and DevOps engineers.
read the full config-file-validator overview →
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Frequently asked questions
Is Langflow or config-file-validator more popular?
Langflow has 155,507 GitHub stars and config-file-validator has 515. Langflow has the larger community by that measure.
Are Langflow and config-file-validator free?
Both are open source. Langflow is licensed under MIT and config-file-validator under Apache-2.0. Neither carries a licence fee.
What is the difference between Langflow and config-file-validator?
Langflow is written in Python and config-file-validator in Go. 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 config-file-validator?
Choose Langflow if you want the larger community (155,507 stars) or its MIT licence terms. Choose config-file-validator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.