head to head · open source
fastapi vs mockserver-monorepo
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. mockserver-monorepo has 4,972 stars, 1,116 forks, 6 open issues and last shipped yesterday. fastapi leads on adoption by 1,960% (102,402 vs 4,972 stars). fastapi is written in Python under MIT; mockserver-monorepo is written in Java under Apache-2.0. fastapi has attracted 10% as many forks as stars, mockserver-monorepo 22%. mockserver-monorepo 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 | mockserver-monorepo | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 5.0K |
| License | MIT | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-09-14 | 2026-09-17 |
| Forks | ⑂ 9.9K | ⑂ 1.1K |
| 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 mockserver-monorepo if
- You want the mockserver-monorepo 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 mockserver-monorepo 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 mockserver-monorepo
MockServer is an Apache 2.0 HTTP(S) mock server and proxy that lets teams mock the APIs their applications depend on, inspect and modify live traffic, and inject failures, and it is aimed at developers, QA engineers, and platform teams testing software built on the JVM.
read the full mockserver-monorepo overview →
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Frequently asked questions
Is fastapi or mockserver-monorepo more popular?
fastapi has 102,402 GitHub stars and mockserver-monorepo has 4,972. fastapi has the larger community by that measure.
Are fastapi and mockserver-monorepo free?
Both are open source. fastapi is licensed under MIT and mockserver-monorepo under Apache-2.0. Neither carries a licence fee.
What is the difference between fastapi and mockserver-monorepo?
fastapi is written in Python and mockserver-monorepo 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 mockserver-monorepo?
Choose fastapi if you want the larger community (102,402 stars) or its MIT licence terms. Choose mockserver-monorepo if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.