head to head · open source
fastapi vs product-apim
fastapi has 104,542 GitHub stars, 10,173 forks, 78 open issues and last shipped 2 days ago. product-apim has 1,042 stars, 958 forks, 651 open issues and last shipped 4 days ago. fastapi leads on adoption by 9,933% (104,542 vs 1,042 stars). fastapi is written in Python under MIT; product-apim is written in Java under Apache-2.0. fastapi has attracted 10% as many forks as stars, product-apim 92%. fastapi 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
| fastapi | product-apim | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 1.0K |
| License | MIT | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-11-01 | 2026-10-30 |
| Forks | ⑂ 10K | ⑂ 958 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 105K stars and counting
- You want the MIT license terms
- Your stack matches Python
- 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 fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production Documentation : Source Code : FastAPI is a modern, fast (high performance), web framework for building APIs with Python based on standard Python type hints. The key features are: Fast : Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available. Fast to code : Increase the speed to develop features by about 200% to 300%. Fewer bugs : Reduce about 40% of human (developer) induced errors. Intuitive : Great editor support. Completion everywhere. Less time…
read the full fastapi 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…
read the full product-apim overview →
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Frequently asked questions
Is fastapi or product-apim more popular?
fastapi has 104,542 GitHub stars and product-apim has 1,042. fastapi has the larger community by that measure.
Are fastapi and product-apim free?
Both are open source. fastapi is licensed under MIT and product-apim under Apache-2.0. Neither carries a licence fee.
What is the difference between fastapi and product-apim?
fastapi is written in Python 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, fastapi or product-apim?
Choose fastapi if you want the larger community (104,542 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.