head to head · open source
Bruno vs fusio
Bruno has 47,027 GitHub stars, 2,890 forks, 1,831 open issues and last shipped yesterday. fusio has 2,116 stars, 240 forks, 169 open issues and last shipped 12 days ago. Bruno leads on adoption by 2,122% (47,027 vs 2,116 stars). Bruno is written in JavaScript under MIT; fusio is written in PHP under Apache-2.0. Bruno has attracted 6% as many forks as stars, fusio 11%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (javascript, 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.
← all 8884 open source comparisons
Side by side
| Bruno | fusio | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 2.1K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | PHP |
| Last push | 2026-09-17 | 2026-09-06 |
| Forks | ⑂ 2.9K | ⑂ 240 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bruno if
- You weight community size — 47K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- 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 Bruno
Bruno is a lightweight, open source API client and IDE for exploring and testing APIs, built for developers and teams who want their request collections stored as plain text in a folder on their own filesystem rather than in a vendor's cloud.
read the full Bruno overview →
About fusio
Fusio Open Source API Management Platform Turn your business logic into scalable API products for humans and AI agents. 📖 Documentation • 📺 Video Walkthrough (15m) • 💬 Discord Community Fusio is a self hosted, open source backend platform and API gateway written in PHP that bridges the gap between your internal infrastructure and the outside world. Whether you are exposing legacy databases, orchestrating microservices, or building custom business logic, Fusio handles the heavy lifting. It transforms your services into a professional API product, complete with an automated developer portal, SDK generation, and …
read the full fusio overview →
More in Developer Tools
Related comparisons
More API Development & Testing projects
Compare either of these against the rest of the API Development & Testing field.
Frequently asked questions
Is Bruno or fusio more popular?
Bruno has 47,027 GitHub stars and fusio has 2,116. Bruno has the larger community by that measure.
Are Bruno and fusio free?
Both are open source. Bruno is licensed under MIT and fusio under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and fusio?
Bruno is written in JavaScript 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, Bruno or fusio?
Choose Bruno if you want the larger community (47,027 stars) or its MIT licence terms. Choose fusio if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.