Bruno vs Swagger UI
A side-by-side comparison of two self-hosted developer tools & git options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Bruno | Swagger UI |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 100 · Excellent | 98 · Excellent |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | MIT | Apache-2.0 |
| Language | JavaScript | JavaScript |
| Setup difficulty | Easy | Easy |
| Min. RAM | 256 MB | 128 MB |
| Deployment | bare-metal, source | docker, bare-metal |
| GitHub stars | ★ 47,149 | ★ 29,018 |
| First released | 2023 | 2011 |
| Replaces | Postman, Insomnia | Postman |
What are Bruno and Swagger UI?
Bruno
Bruno is an open-source API client that stores collections as plain text files in your filesystem, making them version-controllable with Git. It runs fully offline as a desktop application.
- Git-friendly plain-text collections
- Fully offline operation
- No account required
- Scripting and assertions
Swagger UI
Swagger UI renders OpenAPI specifications as interactive, browser-based API documentation. It lets developers explore and try out endpoints directly from the docs.
- Interactive API docs
- Try-it-out console
- OpenAPI 3.x support
- Embeddable in any site
Bruno vs Swagger UI: key differences
Both projects are written in JavaScript. Licensing differs — MIT for Bruno versus Apache-2.0 for Swagger UI. Swagger UI is the lighter option, starting around 128 MB of RAM against 256 MB for Bruno. Swagger UI is the more established project (first released 2011), while Bruno arrived in 2023. Swagger UI lists first-class Docker deployment; Bruno does not.
Why pick each one
Choose Bruno if…
- Git-friendly text collections
- Fully offline, no account
- Lightweight and fast
Watch out for
- Some features paid
- No built-in cloud sync
Choose Swagger UI if…
- Interactive try-it-out
- Simple static hosting
- Industry standard
Watch out for
- Needs well-maintained specs
- Large specs render slowly
Frequently asked questions
Is Bruno or Swagger UI better?
Neither is universally better. Bruno has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Bruno and Swagger UI free and open-source?
Yes. Bruno is licensed under MIT and Swagger UI under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Bruno and Swagger UI with Docker?
Bruno: check the project docs for container support. Swagger UI: yes.
Which is lighter on resources, Bruno or Swagger UI?
Swagger UI has the smaller minimum footprint at 128 MB of RAM, compared to about 256 MB for Bruno. Real-world usage depends on library size, user count, and enabled features.