head to head · open source
fastapi vs open-connector
fastapi has 102,471 GitHub stars, 9,913 forks, 78 open issues and last shipped 2 days ago. open-connector has 5,833 stars, 511 forks, 0 open issues and last shipped today. fastapi leads on adoption by 1,657% (102,471 vs 5,833 stars). fastapi is written in Python under MIT; open-connector is written in TypeScript under Apache-2.0. fastapi has attracted 10% as many forks as stars, open-connector 9%. open-connector 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 | open-connector | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 5.8K |
| License | MIT | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-18 | 2026-09-20 |
| Forks | ⑂ 9.9K | ⑂ 511 |
| 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 open-connector if
- You want the open-connector feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and open-connector 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 open-connector
OpenConnector is an open source auth gateway that connects more than a thousand SaaS providers to AI agents through a Connector SDK, the oo CLI, MCP, HTTP/OpenAPI, and a Web Console, and it is built for developers and teams wiring durable app access into agent products.
read the full open-connector overview →
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Frequently asked questions
Is fastapi or open-connector more popular?
fastapi has 102,471 GitHub stars and open-connector has 5,833. fastapi has the larger community by that measure.
Are fastapi and open-connector free?
Both are open source. fastapi is licensed under MIT and open-connector under Apache-2.0. Neither carries a licence fee.
What is the difference between fastapi and open-connector?
fastapi is written in Python and open-connector 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 open-connector?
Choose fastapi if you want the larger community (102,471 stars) or its MIT licence terms. Choose open-connector if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.