head to head · open source
SafeLine vs NSwag
SafeLine has 22,606 GitHub stars, 1,533 forks, 69 open issues and last shipped 8 days ago. NSwag has 7,365 stars, 1,360 forks, 2,057 open issues and last shipped 11 days ago. SafeLine leads on adoption by 207% (22,606 vs 7,365 stars). SafeLine is written in Go under GPL-3.0; NSwag is written in C# under MIT. SafeLine has attracted 7% as many forks as stars, NSwag 18%. SafeLine 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
| SafeLine | NSwag | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 7.4K |
| License | GPL-3.0 | MIT |
| Written in | Go | C# |
| Last push | 2026-09-10 | 2026-09-07 |
| Forks | ⑂ 1.5K | ⑂ 1.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SafeLine if
- You weight community size — 23K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Go
- 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 SafeLine
SafeLine is a self hosted web application firewall and reverse proxy, written in Go and licensed under GPL 3.0, that filters, monitors, and blocks malicious HTTP/S traffic before it reaches a web application — built for developers, AppSec engineers, and blue teams who want to run edge protection on their own infrastructure.
read the full SafeLine 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 SafeLine or NSwag more popular?
SafeLine has 22,606 GitHub stars and NSwag has 7,365. SafeLine has the larger community by that measure.
Are SafeLine and NSwag free?
Both are open source. SafeLine is licensed under GPL-3.0 and NSwag under MIT. Neither carries a licence fee.
What is the difference between SafeLine and NSwag?
SafeLine is written in Go 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, SafeLine or NSwag?
Choose SafeLine if you want the larger community (22,606 stars) or its GPL-3.0 licence terms. Choose NSwag if its feature set, stack or MIT licence fits better. Both are self-hostable.