head to head · open source
fastapi vs WindsurfAPI
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. WindsurfAPI has 3,021 stars, 628 forks, 7 open issues and last shipped yesterday. fastapi leads on adoption by 3,290% (102,402 vs 3,021 stars). fastapi is written in Python under MIT; WindsurfAPI is written in JavaScript under MIT. fastapi has attracted 10% as many forks as stars, WindsurfAPI 21%. WindsurfAPI 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 | WindsurfAPI | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 3.0K |
| License | MIT | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-09-14 | 2026-09-17 |
| Forks | ⑂ 9.9K | ⑂ 628 |
| 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 WindsurfAPI if
- You want the WindsurfAPI feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and WindsurfAPI 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 WindsurfAPI
WindsurfAPI is a self hosted reverse proxy written in JavaScript and licensed under MIT. It exposes OpenAI, Anthropic, and Gemini compatible HTTP endpoints for 100+ Windsurf and Devin Desktop AI models. It has zero npm runtime dependencies. The project sits in the Developer Tools / API Development & Testing category and uses the Node.js ecosystem.
read the full WindsurfAPI overview →
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Frequently asked questions
Is fastapi or WindsurfAPI more popular?
fastapi has 102,402 GitHub stars and WindsurfAPI has 3,021. fastapi has the larger community by that measure.
Are fastapi and WindsurfAPI free?
Both are open source. fastapi is licensed under MIT and WindsurfAPI under MIT. Neither carries a licence fee.
What is the difference between fastapi and WindsurfAPI?
fastapi is written in Python and WindsurfAPI 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 WindsurfAPI?
Choose fastapi if you want the larger community (102,402 stars) or its MIT licence terms. Choose WindsurfAPI if its feature set, stack or MIT licence fits better. Both are self-hostable.