head to head · open source
Bruno vs wiremock
Bruno has 47,022 GitHub stars, 2,888 forks, 1,831 open issues and last shipped yesterday. wiremock has 7,374 stars, 1,518 forks, 503 open issues and last shipped 3 days ago. Bruno leads on adoption by 538% (47,022 vs 7,374 stars). Bruno is written in JavaScript under MIT; wiremock is written in Java under Apache-2.0. Bruno has attracted 6% as many forks as stars, wiremock 21%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | wiremock | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 7.4K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Java |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 2.9K | ⑂ 1.5K |
| 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 wiremock if
- You want the wiremock 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 wiremock 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 wiremock
WireMock is an open source tool for mocking HTTP services, started in 2011 as a Java library by Tom Akehurst and now spanning multiple programming languages and technology stacks. It lives in the Java ecosystem, is licensed under Apache 2.0, and is published at wiremock.org. The project can run as a library or client wrapper in many languages, or as a standalone server, and it supports several approaches for creating mock APIs: in code, via its REST API, as JSON files, and by recording HTTP traffic proxied to another destination.
read the full wiremock overview →
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Frequently asked questions
Is Bruno or wiremock more popular?
Bruno has 47,022 GitHub stars and wiremock has 7,374. Bruno has the larger community by that measure.
Are Bruno and wiremock free?
Both are open source. Bruno is licensed under MIT and wiremock under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and wiremock?
Bruno is written in JavaScript and wiremock 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 wiremock?
Choose Bruno if you want the larger community (47,022 stars) or its MIT licence terms. Choose wiremock if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.