head to head · open source
fastapi vs Bruno
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. Bruno has 47,022 stars, 2,888 forks, 1,831 open issues and last shipped yesterday. fastapi leads on adoption by 118% (102,402 vs 47,022 stars). fastapi is written in Python under MIT; Bruno is written in JavaScript under MIT. fastapi has attracted 10% as many forks as stars, Bruno 6%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (openapi, openapi3), so they are genuine substitutes rather than adjacent tools.
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 | Bruno | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 47K |
| License | MIT | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-09-14 | 2026-09-17 |
| Forks | ⑂ 9.9K | ⑂ 2.9K |
| 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 Bruno if
- You want the Bruno feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and Bruno 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 Bruno
Bruno is a lightweight, open source API client and IDE for exploring and testing APIs, built for developers and teams who want their request collections stored as plain text in a folder on their own filesystem rather than in a vendor's cloud.
read the full Bruno overview →
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Frequently asked questions
Is fastapi or Bruno more popular?
fastapi has 102,402 GitHub stars and Bruno has 47,022. fastapi has the larger community by that measure.
Are fastapi and Bruno free?
Both are open source. fastapi is licensed under MIT and Bruno under MIT. Neither carries a licence fee.
What is the difference between fastapi and Bruno?
fastapi is written in Python and Bruno in JavaScript. 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 Bruno?
Choose fastapi if you want the larger community (102,402 stars) or its MIT licence terms. Choose Bruno if its feature set, stack or MIT licence fits better. Both are self-hostable.