head to head · open source
fastapi vs apitest
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. apitest has 845 stars, 59 forks, 0 open issues and last shipped 7 days ago. fastapi leads on adoption by 12,275% (104,566 vs 845 stars). fastapi is written in Python under MIT; apitest is written in Go under MIT. fastapi has attracted 10% as many forks as stars, apitest 7%. 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 | apitest | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 845 |
| License | MIT | MIT |
| Written in | Python | Go |
| Last push | 2026-11-02 | 2026-10-27 |
| Forks | ⑂ 10K | ⑂ 59 |
| 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 apitest if
- You want the apitest feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and apitest 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 apitest
apitest A simple and extensible behavioural testing library for Go HTTP services. Tests are written the way a client uses the API: build a request, send it to the handler, and assert on the response. External HTTP calls can be mocked, and every test can render a sequence diagram of what happened. In behavioural tests the internal structure of the app is not known by the tests. Data is input to the system and the outputs are expected to meet certain conditions. Fluent builders for requests and expectations Works with anything that implements http.Handler , or against a running server Declarative mocks for…
read the full apitest overview →
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Frequently asked questions
Is fastapi or apitest more popular?
fastapi has 104,566 GitHub stars and apitest has 845. fastapi has the larger community by that measure.
Are fastapi and apitest free?
Both are open source. fastapi is licensed under MIT and apitest under MIT. Neither carries a licence fee.
What is the difference between fastapi and apitest?
fastapi is written in Python and apitest 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, fastapi or apitest?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose apitest if its feature set, stack or MIT licence fits better. Both are self-hostable.