head to head · open source
Bruno vs Mockoon
Bruno has 47,022 GitHub stars, 2,888 forks, 1,831 open issues and last shipped yesterday. Mockoon has 8,411 stars, 477 forks, 31 open issues and last shipped 2 days ago. Bruno leads on adoption by 459% (47,022 vs 8,411 stars). Bruno is written in JavaScript under MIT; Mockoon is written in TypeScript under MIT. Bruno has attracted 6% as many forks as stars, Mockoon 6%. Bruno 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
| Bruno | Mockoon | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 8.4K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 2.9K | ⑂ 477 |
| 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 Mockoon if
- You want the Mockoon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Mockoon 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 Mockoon
Mockoon is an open source API mocking tool written in TypeScript and released under the MIT license. It ships as a desktop application built with Electron for designing and running mock servers locally, alongside a command line interface and a serverless package for running the same mock APIs in headless and cloud function environments. The project lives in the JavaScript and TypeScript ecosystem, distributed through NPM as @mockoon/cli and @mockoon/serverless , and through native package managers on each desktop platform. No remote deployment and no account are required to run it.
read the full Mockoon overview →
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Frequently asked questions
Is Bruno or Mockoon more popular?
Bruno has 47,022 GitHub stars and Mockoon has 8,411. Bruno has the larger community by that measure.
Are Bruno and Mockoon free?
Both are open source. Bruno is licensed under MIT and Mockoon under MIT. Neither carries a licence fee.
What is the difference between Bruno and Mockoon?
Bruno is written in JavaScript and Mockoon in TypeScript. 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 Mockoon?
Choose Bruno if you want the larger community (47,022 stars) or its MIT licence terms. Choose Mockoon if its feature set, stack or MIT licence fits better. Both are self-hostable.