head to head · open source
Bruno vs microcks
Bruno has 47,992 GitHub stars, 3,068 forks, 1,831 open issues and last shipped yesterday. microcks has 2,076 stars, 376 forks, 58 open issues and last shipped yesterday. Bruno leads on adoption by 2,212% (47,992 vs 2,076 stars). Bruno is written in JavaScript under MIT; microcks is written in Java under Apache-2.0. Bruno has attracted 6% as many forks as stars, microcks 18%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-testing), 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 | microcks | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 2.1K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.1K | ⑂ 376 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bruno if
- You weight community size — 48K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick microcks if
- You want the microcks feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and microcks fits your workflow better
About Bruno
Bruno Opensource IDE for exploring and testing APIs. English Українська Русский Türkçe Deutsch Français Português (BR) 한국어 বাংলা Español Italiano Română Polski 简体中文 正體中文 العربية 日本語 ქართული Nederlands فارسی Bruno is a new and innovative API client, aimed at revolutionizing the status quo represented by Postman and similar tools out there. Bruno stores your collections directly in a folder on your filesystem. We use a plain text markup language, Bru, to save information about API requests. You can use Git or any version control of your choice to collaborate over your API collections. Bruno is offline only. There…
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About microcks
) Microcks cloud native tool for API Mocking & Testing Microcks is a platform for turning your API and microservices assets OpenAPI specs , AsyncAPI specs , gRPC protobuf , GraphQL schema , Postman collections , SoapUI projects into live mocks in seconds. It also reuses these assets to run contract conformance and non regression tests against your API implementation. We provide integrations with Jenkins , GitHub Actions , Tekton and many others through a simple CLI. &message=208&color=0094FF&logo=linuxfoundation&logoColor=white&style=flat) Getting Started Documentation Microcks Community and community meeting To…
read the full microcks overview →
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Frequently asked questions
Is Bruno or microcks more popular?
Bruno has 47,992 GitHub stars and microcks has 2,076. Bruno has the larger community by that measure.
Are Bruno and microcks free?
Both are open source. Bruno is licensed under MIT and microcks under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and microcks?
Bruno is written in JavaScript and microcks in Java. 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 microcks?
Choose Bruno if you want the larger community (47,992 stars) or its MIT licence terms. Choose microcks if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.