head to head · open source
Bruno vs openapi-generator-cli
Bruno has 47,027 GitHub stars, 2,890 forks, 1,831 open issues and last shipped 2 days ago. openapi-generator-cli has 1,977 stars, 208 forks, 71 open issues and last shipped 3 days ago. Bruno leads on adoption by 2,279% (47,027 vs 1,977 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 | ★ 47K | ★ 2.0K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 2.9K | ⑂ 208 |
| 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 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 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 openapi-generator-cli
@openapitools/openapi generator cli is a Node package that wraps the Java based OpenAPI Generator, letting JavaScript and TypeScript developers generate API client libraries, server stubs, and documentation from OpenAPI 2.0 and 3.0 specifications without invoking the upstream Java toolchain by hand.
read the full openapi-generator-cli overview →
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Frequently asked questions
Is Bruno or openapi-generator-cli more popular?
Bruno has 47,027 GitHub stars and openapi-generator-cli has 1,977. 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 (47,027 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.