head to head · open source
open-connector vs fusio
open-connector has 5,833 GitHub stars, 511 forks, 0 open issues and last shipped today. fusio has 2,116 stars, 241 forks, 169 open issues and last shipped 14 days ago. open-connector leads on adoption by 176% (5,833 vs 2,116 stars). open-connector is written in TypeScript under Apache-2.0; fusio is written in PHP under Apache-2.0. open-connector has attracted 9% as many forks as stars, fusio 11%. open-connector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai-agents, api-gateway), 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
| open-connector | fusio | |
|---|---|---|
| GitHub stars | ★ 5.8K | ★ 2.1K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | PHP |
| Last push | 2026-09-20 | 2026-09-06 |
| Forks | ⑂ 511 | ⑂ 241 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick open-connector if
- You weight community size — 5.8K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick fusio if
- You want the fusio feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches PHP
- You evaluated both and fusio fits your workflow better
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 →
About fusio
Fusio is a self hosted, open source API management platform and gateway written in PHP that turns internal business logic, legacy databases, and microservices into documented API products for third party developers and autonomous AI agents.
read the full fusio overview →
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Frequently asked questions
Is open-connector or fusio more popular?
open-connector has 5,833 GitHub stars and fusio has 2,116. open-connector has the larger community by that measure.
Are open-connector and fusio free?
Both are open source. open-connector is licensed under Apache-2.0 and fusio under Apache-2.0. Neither carries a licence fee.
What is the difference between open-connector and fusio?
open-connector is written in TypeScript and fusio in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, open-connector or fusio?
Choose open-connector if you want the larger community (5,833 stars) or its Apache-2.0 licence terms. Choose fusio if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.