head to head · open source
SafeLine vs swagger-core
SafeLine has 22,606 GitHub stars, 1,533 forks, 69 open issues and last shipped 8 days ago. swagger-core has 7,530 stars, 2,259 forks, 197 open issues and last shipped yesterday. SafeLine leads on adoption by 200% (22,606 vs 7,530 stars). SafeLine is written in Go under GPL-3.0; swagger-core is written in Java under Apache-2.0. SafeLine has attracted 7% as many forks as stars, swagger-core 30%. swagger-core 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 | swagger-core | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 7.5K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-10 | 2026-09-17 |
| Forks | ⑂ 1.5K | ⑂ 2.3K |
| 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 swagger-core if
- You want the swagger-core 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 swagger-core 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 swagger-core
Swagger Core is the Java implementation of the OpenAPI Specification that generates a machine readable REST API description from JAX RS2 annotations and Java classes, intended for Java server developers and API platform teams that publish and maintain OpenAPI documents alongside their services.
read the full swagger-core overview →
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Frequently asked questions
Is SafeLine or swagger-core more popular?
SafeLine has 22,606 GitHub stars and swagger-core has 7,530. SafeLine has the larger community by that measure.
Are SafeLine and swagger-core free?
Both are open source. SafeLine is licensed under GPL-3.0 and swagger-core under Apache-2.0. Neither carries a licence fee.
What is the difference between SafeLine and swagger-core?
SafeLine is written in Go and swagger-core 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, SafeLine or swagger-core?
Choose SafeLine if you want the larger community (22,606 stars) or its GPL-3.0 licence terms. Choose swagger-core if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.