head to head · open source
fastapi vs httpmock
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. httpmock has 675 stars, 60 forks, 37 open issues and last shipped yesterday. fastapi leads on adoption by 15,391% (104,566 vs 675 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 | ★ 105K | ★ 675 |
| License | MIT | MIT |
| Written in | Python | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 10K | ⑂ 60 |
| 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 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 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 httpmock
Simple yet powerful HTTP mocking library for Rust Website · API Reference · Crate · Chat on Discord · Report Bug · Request Feature · Support this Project Features Mocks responses from HTTP services Simple, expressive, fluent API. Many built in helpers for easy request matching (Regex, JSON, serde, cookies, and more). Record and Playback third party services Forward and Proxy Mode HTTPS support Fault and network delay simulation. Custom request matchers. Standalone mode with an accompanying Docker image. Helpful error messages Advanced verification and debugging support (including diff generation between actual…
read the full httpmock overview →
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Frequently asked questions
Is fastapi or httpmock more popular?
fastapi has 104,566 GitHub stars and httpmock has 675. 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 (104,566 stars) or its MIT licence terms. Choose httpmock if its feature set, stack or MIT licence fits better. Both are self-hostable.