head to head · open source
fastapi vs httpmock
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. httpmock has 667 stars, 62 forks, 37 open issues and last shipped 4 days ago. fastapi leads on adoption by 15,253% (102,402 vs 667 stars). fastapi is written in Python under MIT; httpmock is written in Rust under MIT. fastapi has attracted 10% as many forks as stars, httpmock 9%. 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 | httpmock | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 667 |
| License | MIT | MIT |
| Written in | Python | Rust |
| Last push | 2026-09-14 | 2026-09-14 |
| Forks | ⑂ 9.9K | ⑂ 62 |
| 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 httpmock if
- You want the httpmock feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and httpmock 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 httpmock
httpmock is an open source HTTP mocking library for Rust that starts lightweight mock HTTP servers inside a test, and it is aimed at Rust developers who need to test code that talks to HTTP services without standing up the real ones.
read the full httpmock overview →
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Frequently asked questions
Is fastapi or httpmock more popular?
fastapi has 102,402 GitHub stars and httpmock has 667. fastapi has the larger community by that measure.
Are fastapi and httpmock free?
Both are open source. fastapi is licensed under MIT and httpmock under MIT. Neither carries a licence fee.
What is the difference between fastapi and httpmock?
fastapi is written in Python and httpmock in Rust. 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 httpmock?
Choose fastapi if you want the larger community (102,402 stars) or its MIT licence terms. Choose httpmock if its feature set, stack or MIT licence fits better. Both are self-hostable.