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Dev tools · June 12, 2017

Keygen – A dead-simple software licensing API built for developers

Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in Go, Rust, JS, C/C++, C#, Swift, Java, Kotlin and more.

Keygen – A dead-simple software licensing API built for developers launched on June 12, 2017 with 190 votes, #167 of 3,107 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 9 years on.

Visit keygen.sh ↗Alternativestop 5% of June 2017

In plain words

Keygen is a software licensing API that helps developers add license management to desktop applications, on-premise software, and other products built in languages like Go, Rust, JavaScript, C/C++, C#, Swift, and Java. It offers both self-hosted and cloud options with SDKs and HTTP client support for easy integration. The platform provides enterprise-grade licensing and distribution capabilities designed for developers.

written from the facts on this page · September 2026

From the sources

Keygen is a Fair Source software licensing and distribution API , built for developers, by developers. Self-host or try Keygen Cloud today. We've designed Keygen 's software licensing and distribution API to be easy to use for developers of all skill sets. Use our official SDKs or grab your favorite HTTP client. keygen.LicenseKey = "C1B6DE-39A6E3-DE1529-8559A0-4AF593-V3" // Validate the license license, err := keygen. Validate (fingerprint) if err == keygen.ErrLicenseExpired { panic ( "license is expired!" ) } if err == keygen.ErrLicenseNotActivated { // Activate the license machine, _ := license. Activate (fingerprint) fmt. Printf ( "activated machine %s for license %s ! \n " , machine.ID,…from keygen.sh

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