head to head · open source
openapi-generator vs goa
openapi-generator has 26,846 GitHub stars, 7,749 forks, 5,810 open issues and last shipped today. goa has 6,119 stars, 582 forks, 38 open issues and last shipped yesterday. openapi-generator leads on adoption by 339% (26,846 vs 6,119 stars). openapi-generator is written in Java under Apache-2.0; goa is written in Go under MIT. openapi-generator has attracted 29% as many forks as stars, goa 10%. openapi-generator was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (api, openapi, rest), 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
| openapi-generator | goa | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 6.1K |
| License | Apache-2.0 | MIT |
| Written in | Java | Go |
| Last push | 2026-11-03 | 2026-11-02 |
| Forks | ⑂ 7.7K | ⑂ 582 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick openapi-generator if
- You weight community size — 27K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick goa if
- You want the goa feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and goa fits your workflow better
About openapi-generator
OpenAPI Generator Master ( 7.28.0 ): :star::star::star: If you would like to contribute, please refer to guidelines and a list of open tasks. :star::star::star: :bangbang: To migrate from Swagger Codegen to OpenAPI Generator, please refer to the migration guide :bangbang: :notebook with decorative cover: For more information, please refer to the Wiki page and FAQ :notebook with decorative cover: :notebook with decorative cover: The eBook A Beginner's Guide to Code Generation for REST APIs is a good starting point for beginners :notebook with decorative cover: :warning: If the OpenAPI spec, templates or any input…
read the full openapi-generator overview →
About goa
Goa Design First, Code With Confidence Overview Goa transforms how you build APIs and microservices in Go with its powerful design first approach. Instead of writing boilerplate code, you express your API's intent through a clear, expressive DSL. Goa then automatically generates production ready code, comprehensive documentation, and client libraries—all perfectly aligned with your design. The result? Dramatically reduced development time, consistent APIs, and the elimination of the documentation code drift that plagues traditional development. Sponsors incident.io: Bounce back stronger after every incident Use…
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Frequently asked questions
Is openapi-generator or goa more popular?
openapi-generator has 26,846 GitHub stars and goa has 6,119. openapi-generator has the larger community by that measure.
Are openapi-generator and goa free?
Both are open source. openapi-generator is licensed under Apache-2.0 and goa under MIT. Neither carries a licence fee.
What is the difference between openapi-generator and goa?
openapi-generator is written in Java and goa in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, openapi-generator or goa?
Choose openapi-generator if you want the larger community (26,846 stars) or its Apache-2.0 licence terms. Choose goa if its feature set, stack or MIT licence fits better. Both are self-hostable.