head to head · open source
openapi-generator vs openapi-typescript
openapi-generator has 26,846 GitHub stars, 7,748 forks, 5,819 open issues and last shipped yesterday. openapi-typescript has 8,426 stars, 677 forks, 300 open issues and last shipped 1 months ago. openapi-generator leads on adoption by 219% (26,846 vs 8,426 stars). openapi-generator is written in Java under Apache-2.0; openapi-typescript is written in TypeScript under MIT. openapi-generator has attracted 29% as many forks as stars, openapi-typescript 8%. openapi-generator 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
| openapi-generator | openapi-typescript | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 8.4K |
| License | Apache-2.0 | MIT |
| Written in | Java | TypeScript |
| Last push | 2026-11-02 | 2026-09-25 |
| Forks | ⑂ 7.7K | ⑂ 677 |
| 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 openapi-typescript if
- You want the openapi-typescript feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and openapi-typescript fits your workflow better
About openapi-generator
OpenAPI Generator Master ( 7.27.0 ): :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 openapi-typescript
openapi typescript Tools for consuming OpenAPI schemas in TypeScript. 📦 Packages Generate TypeScript types from static OpenAPI schemas Ultra fast fetching for TypeScript generated automatically from your OpenAPI schema. ⭐ Sponsors 🥇 Gold Sponsors 🥈 Silver Sponsors Backers Become a sponsor by supporting this project on OpenCollective! 🤝 Contributing Contributions are appreciated and welcome! See the appropriate guide for each package: Contributing to openapi typescript Contributing to openapi fetch Contributing to docs ♥️ Thanks Thanks to the Project Sponsors for keeping this project going! Thanks to dozens…
read the full openapi-typescript overview →
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Frequently asked questions
Is openapi-generator or openapi-typescript more popular?
openapi-generator has 26,846 GitHub stars and openapi-typescript has 8,426. openapi-generator has the larger community by that measure.
Are openapi-generator and openapi-typescript free?
Both are open source. openapi-generator is licensed under Apache-2.0 and openapi-typescript under MIT. Neither carries a licence fee.
What is the difference between openapi-generator and openapi-typescript?
openapi-generator is written in Java and openapi-typescript 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, openapi-generator or openapi-typescript?
Choose openapi-generator if you want the larger community (26,846 stars) or its Apache-2.0 licence terms. Choose openapi-typescript if its feature set, stack or MIT licence fits better. Both are self-hostable.