head to head · open source
one-api vs NelmioApiDocBundle
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. NelmioApiDocBundle has 2,368 stars, 910 forks, 55 open issues and last shipped yesterday. one-api leads on adoption by 1,460% (36,940 vs 2,368 stars). one-api is written in JavaScript under MIT; NelmioApiDocBundle is written in PHP under MIT. one-api has attracted 19% as many forks as stars, NelmioApiDocBundle 38%. NelmioApiDocBundle was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api), so they are genuine substitutes rather than adjacent tools.
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
| one-api | NelmioApiDocBundle | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 2.4K |
| License | MIT | MIT |
| Written in | JavaScript | PHP |
| Last push | 2026-01-09 | 2026-09-18 |
| Forks | ⑂ 6.9K | ⑂ 910 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick one-api if
- You weight community size — 37K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick NelmioApiDocBundle if
- You want the NelmioApiDocBundle feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches PHP
- You evaluated both and NelmioApiDocBundle fits your workflow better
About one-api
One API is a self hosted LLM API management and key redistribution system that exposes many model providers through the standard OpenAI API format, aimed at developers, teams and operators who want a single endpoint, a single key model and a single quota surface across providers.
read the full one-api overview →
About NelmioApiDocBundle
NelmioApiDocBundle is an MIT licensed Symfony bundle that generates REST API documentation from PHP 8 attributes, built for PHP and Symfony teams that want OpenAPI descriptions derived from their code rather than written and maintained by hand.
read the full NelmioApiDocBundle overview →
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Frequently asked questions
Is one-api or NelmioApiDocBundle more popular?
one-api has 36,940 GitHub stars and NelmioApiDocBundle has 2,368. one-api has the larger community by that measure.
Are one-api and NelmioApiDocBundle free?
Both are open source. one-api is licensed under MIT and NelmioApiDocBundle under MIT. Neither carries a licence fee.
What is the difference between one-api and NelmioApiDocBundle?
one-api is written in JavaScript and NelmioApiDocBundle in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, one-api or NelmioApiDocBundle?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose NelmioApiDocBundle if its feature set, stack or MIT licence fits better. Both are self-hostable.