head to head · open source
redoc vs fusio
redoc has 25,915 GitHub stars, 2,397 forks, 449 open issues and last shipped 5 days ago. fusio has 2,116 stars, 241 forks, 169 open issues and last shipped 15 days ago. redoc leads on adoption by 1,125% (25,915 vs 2,116 stars). redoc is written in TypeScript under MIT; fusio is written in PHP under Apache-2.0. redoc has attracted 9% as many forks as stars, fusio 11%. redoc was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (openapi), 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
| redoc | fusio | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 2.1K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | PHP |
| Last push | 2026-09-16 | 2026-09-06 |
| Forks | ⑂ 2.4K | ⑂ 241 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick redoc if
- You weight community size — 26K stars and counting
- You want the MIT 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 redoc
Redoc is an open source tool for generating API reference documentation from OpenAPI definitions, formerly known as Swagger. It lives in the JavaScript and TypeScript ecosystem, ships under the MIT license, and is published on npm as the redoc package. By default it renders a responsive three panel layout: a left panel holding the search bar and navigation menu, a central panel holding the documentation itself, and a right panel showing request and response examples.
read the full redoc 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 redoc or fusio more popular?
redoc has 25,915 GitHub stars and fusio has 2,116. redoc has the larger community by that measure.
Are redoc and fusio free?
Both are open source. redoc is licensed under MIT and fusio under Apache-2.0. Neither carries a licence fee.
What is the difference between redoc and fusio?
redoc 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, redoc or fusio?
Choose redoc if you want the larger community (25,915 stars) or its MIT licence terms. Choose fusio if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.