head to head · open source
Hoppscotch vs NSwag
Hoppscotch has 80,331 GitHub stars, 6,110 forks, 820 open issues and last shipped 2 days ago. NSwag has 7,365 stars, 1,360 forks, 2,057 open issues and last shipped 11 days ago. Hoppscotch leads on adoption by 991% (80,331 vs 7,365 stars). Hoppscotch is written in TypeScript under MIT; NSwag is written in C# under MIT. Hoppscotch has attracted 8% as many forks as stars, NSwag 18%. Hoppscotch was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | NSwag | |
|---|---|---|
| GitHub stars | ★ 80K | ★ 7.4K |
| License | MIT | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-09-16 | 2026-09-07 |
| Forks | ⑂ 6.1K | ⑂ 1.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hoppscotch if
- You weight community size — 80K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick NSwag if
- You want the NSwag feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and NSwag fits your workflow better
About Hoppscotch
Hoppscotch is an open source API development ecosystem that provides a full featured client for designing, testing, and documenting APIs. It operates as a web based application, desktop app, and CLI tool, supporting offline, on premises, and cloud deployments. Built with TypeScript and licensed under MIT, it serves as a direct open source alternative to proprietary tools like Postman and Insomnia.
read the full Hoppscotch overview →
About NSwag
NSwag is an MIT licensed Swagger/OpenAPI 2.0 and 3.0 toolchain written in C for .NET, ASP.NET Core, and TypeScript developers who need to generate OpenAPI specifications from ASP.NET Web API controllers and generate C or TypeScript clients from those specifications.
read the full NSwag overview →
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Frequently asked questions
Is Hoppscotch or NSwag more popular?
Hoppscotch has 80,331 GitHub stars and NSwag has 7,365. Hoppscotch has the larger community by that measure.
Are Hoppscotch and NSwag free?
Both are open source. Hoppscotch is licensed under MIT and NSwag under MIT. Neither carries a licence fee.
What is the difference between Hoppscotch and NSwag?
Hoppscotch is written in TypeScript and NSwag in C#. 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 NSwag?
Choose Hoppscotch if you want the larger community (80,331 stars) or its MIT licence terms. Choose NSwag if its feature set, stack or MIT licence fits better. Both are self-hostable.