head to head · open source
redoc vs NSwag
redoc has 25,913 GitHub stars, 2,395 forks, 449 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. redoc leads on adoption by 252% (25,913 vs 7,365 stars). redoc is written in TypeScript under MIT; NSwag is written in C# under MIT. redoc has attracted 9% as many forks as stars, NSwag 18%. redoc was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (openapi, swagger), 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
| redoc | NSwag | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 7.4K |
| License | MIT | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-09-16 | 2026-09-07 |
| Forks | ⑂ 2.4K | ⑂ 1.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick redoc if
- You weight community size — 26K 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 redoc
Redoc is an open source tool for generating API reference documentation from OpenAPI definitions, formerly known as Swagger. It lives in the JavaScript and TypeScript ecosystem, ships under the MIT license, and is published on npm as the redoc package. By default it renders a responsive three panel layout: a left panel holding the search bar and navigation menu, a central panel holding the documentation itself, and a right panel showing request and response examples.
read the full redoc 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 redoc or NSwag more popular?
redoc has 25,913 GitHub stars and NSwag has 7,365. redoc has the larger community by that measure.
Are redoc and NSwag free?
Both are open source. redoc is licensed under MIT and NSwag under MIT. Neither carries a licence fee.
What is the difference between redoc and NSwag?
redoc 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, redoc or NSwag?
Choose redoc if you want the larger community (25,913 stars) or its MIT licence terms. Choose NSwag if its feature set, stack or MIT licence fits better. Both are self-hostable.