head to head · open source
fastapi vs Yaak
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. Yaak has 19,399 stars, 840 forks, 19 open issues and last shipped yesterday. fastapi leads on adoption by 439% (104,566 vs 19,399 stars). fastapi is written in Python under MIT; Yaak is written in TypeScript under MIT. fastapi has attracted 10% as many forks as stars, Yaak 4%. 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 | Yaak | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 19K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 10K | ⑂ 840 |
| 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 Yaak if
- You want the Yaak feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Yaak 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 Yaak
💫 Yaak ➟ Desktop API Client 💫 A fast, privacy first API client for REST, GraphQL, SSE, WebSocket, and gRPC – built with Tauri, Rust, and React. Development is funded by community purchased licenses . You can also become a sponsor to have your logo appear below. 💖 Features Yaak is an offline first API client designed to stay out of your way while giving you everything you need when you need it. Built with Tauri, Rust, and React, it’s fast, lightweight, and private. No telemetry, no VC funding, and no cloud lock in. 🌐 Work with any API Import collections from Postman, Insomnia, OpenAPI, Swagger, or Curl. Send…
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Frequently asked questions
Is fastapi or Yaak more popular?
fastapi has 104,566 GitHub stars and Yaak has 19,399. fastapi has the larger community by that measure.
Are fastapi and Yaak free?
Both are open source. fastapi is licensed under MIT and Yaak under MIT. Neither carries a licence fee.
What is the difference between fastapi and Yaak?
fastapi is written in Python and Yaak in TypeScript. 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 Yaak?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose Yaak if its feature set, stack or MIT licence fits better. Both are self-hostable.