Bruno vs Prism Mock
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 | Prism Mock |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 100 · Excellent | 90 · Excellent |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | MIT | Apache-2.0 |
| Language | JavaScript | TypeScript |
| Setup difficulty | Easy | Easy |
| Min. RAM | 256 MB | 128 MB |
| Deployment | bare-metal, source | docker, binary |
| GitHub stars | ★ 47,149 | ★ 5,035 |
| First released | 2023 | 2017 |
| Replaces | Postman, Insomnia | Postman, Stoplight |
What are Bruno and Prism Mock?
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
Prism Mock
Prism is an open-source HTTP mock server and validation proxy that turns OpenAPI documents into working mock APIs. It can also validate live traffic against a specification for contract testing.
- OpenAPI-driven mocking
- Contract validation proxy
- Dynamic example responses
- CLI and Docker
Bruno vs Prism Mock: key differences
Bruno is written in JavaScript, while Prism Mock is built with TypeScript. Licensing differs — MIT for Bruno versus Apache-2.0 for Prism Mock. Prism Mock is the lighter option, starting around 128 MB of RAM against 256 MB for Bruno. Prism Mock is the more established project (first released 2017), while Bruno arrived in 2023. Bruno has the considerably larger community, at 47,149 GitHub stars versus 5,035. Prism Mock 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 Prism Mock if…
- Spec stays the source of truth
- Good for contract testing
Watch out for
- Requires an OpenAPI doc
- Mock realism is limited
Frequently asked questions
Is Bruno or Prism Mock 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 Prism Mock free and open-source?
Yes. Bruno is licensed under MIT and Prism Mock under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Bruno and Prism Mock with Docker?
Bruno: check the project docs for container support. Prism Mock: yes.
Which is lighter on resources, Bruno or Prism Mock?
Prism Mock 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.