head to head · open source
fastapi vs apitest
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. apitest has 846 stars, 58 forks, 0 open issues and last shipped 15 days ago. fastapi leads on adoption by 12,004% (102,402 vs 846 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 | ★ 102K | ★ 846 |
| License | MIT | MIT |
| Written in | Python | Go |
| Last push | 2026-09-14 | 2026-09-03 |
| Forks | ⑂ 9.9K | ⑂ 58 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 102K 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 is an MIT licensed, high performance Python web framework for building APIs with standard Python type hints, aimed at Python developers and teams that need production ready HTTP services with automatic OpenAPI documentation.
read the full fastapi overview →
About apitest
apitest is a behavioural testing library for Go HTTP services, published under the MIT licence and maintained at github.com/steinfletcher/apitest. It lives in the Go ecosystem and has been in development for eight years, accumulating 846 stars and 58 forks, with an API the README describes as stable. Tests are written the way a client uses an API: a request is built, sent to a handler, and the response is asserted against expectations. The README states that in behavioural tests the internal structure of the application is not known by the tests; data is input to the system and the outputs must meet certain condi…
read the full apitest overview →
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Frequently asked questions
Is fastapi or apitest more popular?
fastapi has 102,402 GitHub stars and apitest has 846. 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 (102,402 stars) or its MIT licence terms. Choose apitest if its feature set, stack or MIT licence fits better. Both are self-hostable.