head to head · open source
Bruno vs openapi-generator-cli
Bruno has 47,992 GitHub stars, 3,068 forks, 1,831 open issues and last shipped yesterday. openapi-generator-cli has 1,991 stars, 212 forks, 71 open issues and last shipped yesterday. Bruno leads on adoption by 2,310% (47,992 vs 1,991 stars). Bruno is written in JavaScript under MIT; openapi-generator-cli is written in TypeScript under Apache-2.0. Bruno has attracted 6% as many forks as stars, openapi-generator-cli 11%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (openapi, openapi3), 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 | openapi-generator-cli | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 2.0K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.1K | ⑂ 212 |
| 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 openapi-generator-cli if
- You want the openapi-generator-cli feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and openapi-generator-cli 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…
read the full Bruno overview →
About openapi-generator-cli
@openapitools/openapi generator cli OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (both 2.0 and 3.0 are supported). Please see OpenAPITools/openapi generator. The OpenAPI Generator is a Java project. openapi generator cli will download the appropriate JAR file and invoke the java executable to run the OpenAPI Generator. You must have the java binary executable available on your PATH for this to work. (JDK 11 is the minimal version supported. To install OpenJDK, please visit If you find this tool…
read the full openapi-generator-cli overview →
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Frequently asked questions
Is Bruno or openapi-generator-cli more popular?
Bruno has 47,992 GitHub stars and openapi-generator-cli has 1,991. Bruno has the larger community by that measure.
Are Bruno and openapi-generator-cli free?
Both are open source. Bruno is licensed under MIT and openapi-generator-cli under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and openapi-generator-cli?
Bruno is written in JavaScript and openapi-generator-cli 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 openapi-generator-cli?
Choose Bruno if you want the larger community (47,992 stars) or its MIT licence terms. Choose openapi-generator-cli if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.