head to head · open source
fastapi vs microcks
fastapi has 104,542 GitHub stars, 10,173 forks, 78 open issues and last shipped 2 days ago. microcks has 2,073 stars, 376 forks, 58 open issues and last shipped 7 days ago. fastapi leads on adoption by 4,943% (104,542 vs 2,073 stars). fastapi is written in Python under MIT; microcks is written in Java under Apache-2.0. fastapi has attracted 10% as many forks as stars, microcks 18%. fastapi 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
| fastapi | microcks | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 2.1K |
| License | MIT | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-11-01 | 2026-10-27 |
| Forks | ⑂ 10K | ⑂ 376 |
| 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 microcks if
- You want the microcks 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 microcks 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 microcks
) Microcks cloud native tool for API Mocking & Testing Microcks is a platform for turning your API and microservices assets OpenAPI specs , AsyncAPI specs , gRPC protobuf , GraphQL schema , Postman collections , SoapUI projects into live mocks in seconds. It also reuses these assets to run contract conformance and non regression tests against your API implementation. We provide integrations with Jenkins , GitHub Actions , Tekton and many others through a simple CLI. &message=208&color=0094FF&logo=linuxfoundation&logoColor=white&style=flat) Getting Started Documentation Microcks Community and community meeting To…
read the full microcks overview →
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Frequently asked questions
Is fastapi or microcks more popular?
fastapi has 104,542 GitHub stars and microcks has 2,073. fastapi has the larger community by that measure.
Are fastapi and microcks free?
Both are open source. fastapi is licensed under MIT and microcks under Apache-2.0. Neither carries a licence fee.
What is the difference between fastapi and microcks?
fastapi is written in Python and microcks 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 microcks?
Choose fastapi if you want the larger community (104,542 stars) or its MIT licence terms. Choose microcks if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.