head to head · open source
Hoppscotch vs openapi-generator
Hoppscotch has 80,724 GitHub stars, 6,225 forks, 820 open issues and last shipped 3 days ago. openapi-generator has 26,846 stars, 7,748 forks, 5,819 open issues and last shipped yesterday. Hoppscotch leads on adoption by 201% (80,724 vs 26,846 stars). Hoppscotch is written in TypeScript under MIT; openapi-generator is written in Java under Apache-2.0. Hoppscotch has attracted 8% as many forks as stars, openapi-generator 29%. openapi-generator was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (api, api-client, rest, rest-api), 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
| Hoppscotch | openapi-generator | |
|---|---|---|
| GitHub stars | ★ 81K | ★ 27K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Java |
| Last push | 2026-10-31 | 2026-11-02 |
| Forks | ⑂ 6.2K | ⑂ 7.7K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hoppscotch if
- You weight community size — 81K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick openapi-generator if
- You want the openapi-generator 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 openapi-generator fits your workflow better
About Hoppscotch
Hoppscotch Open Source API Development Ecosystem Built with ❤︎ by contributors We highly recommend you take a look at the Hoppscotch Documentation to learn more about the app. Support Features ❤️ Lightweight: Crafted with minimalistic UI design. ⚡️ Fast: Send requests and get responses in real time. 🗄️ HTTP Methods: Request methods define the type of action you are requesting to be performed. GET Requests retrieve resource information POST The server creates a new entry in a database PUT Updates an existing resource PATCH Very similar to PUT but makes a partial update on a resource DELETE Deletes resource or…
read the full Hoppscotch overview →
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 →
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Frequently asked questions
Is Hoppscotch or openapi-generator more popular?
Hoppscotch has 80,724 GitHub stars and openapi-generator has 26,846. Hoppscotch has the larger community by that measure.
Are Hoppscotch and openapi-generator free?
Both are open source. Hoppscotch is licensed under MIT and openapi-generator under Apache-2.0. Neither carries a licence fee.
What is the difference between Hoppscotch and openapi-generator?
Hoppscotch is written in TypeScript and openapi-generator 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, Hoppscotch or openapi-generator?
Choose Hoppscotch if you want the larger community (80,724 stars) or its MIT licence terms. Choose openapi-generator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.