head to head · open source
one-api vs product-apim
one-api has 36,940 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. product-apim has 1,028 stars, 950 forks, 651 open issues and last shipped 7 days ago. one-api leads on adoption by 3,493% (36,940 vs 1,028 stars). one-api is written in JavaScript under MIT; product-apim is written in Java under Apache-2.0. one-api has attracted 19% as many forks as stars, product-apim 92%. product-apim was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-gateway), 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.
← all 8884 open source comparisons
Side by side
| one-api | product-apim | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 1.0K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Java |
| Last push | 2026-01-09 | 2026-09-11 |
| Forks | ⑂ 6.9K | ⑂ 950 |
| 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 product-apim if
- You want the product-apim feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and product-apim 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 product-apim
WSO2 API Manager WSO2 API Manager is a complete platform for building, integrating, and exposing your digital services as managed APIs in the cloud, on premise, and hybrid architectures to drive your digital transformation strategy. It allows API developers to design, publish, and manage the lifecycle of APIs and API product managers to create API products from one or more APIs. To learn more about WSO2 API Manager please visit If you run your workloads on Kubernetes, we recommend you check our specific solution for the Kubernetes platform Why WSO2 API Manager? From simple scenarios to comprehensive protocol supp…
read the full product-apim overview →
More in Developer Tools
Related comparisons
More API Development & Testing projects
Compare either of these against the rest of the API Development & Testing field.
Frequently asked questions
Is one-api or product-apim more popular?
one-api has 36,940 GitHub stars and product-apim has 1,028. one-api has the larger community by that measure.
Are one-api and product-apim free?
Both are open source. one-api is licensed under MIT and product-apim under Apache-2.0. Neither carries a licence fee.
What is the difference between one-api and product-apim?
one-api is written in JavaScript and product-apim in Java. 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 product-apim?
Choose one-api if you want the larger community (36,940 stars) or its MIT licence terms. Choose product-apim if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.