Keygen is now Fair SourceStar us on GitHub

Use Cases
- Software Application LicensingUse Keygen's flagship software licensing API to add license key validation, device activation and entitlements to any software product.
- Software Artifact DistributionUse Keygen's supplementary software distribution API to securely deliver artifacts and offer automatic updates to licensed users.
- No-code Licensing AutomationUse Zapier to integrate Keygen with your favorite tools, such as Stripe for payments, and Postmark for transactional emails. No code required.
- For On-Premise/Multi-Prem
- For Go Programs
- For Mac Applications
- For Container Images
- For Windows Programs
- For Electron Apps
- For WordPress Plugins
- For Tauri Apps
- For Python Packages
- For PHP Packages
- For Node Packages
- For RubyGems
Demos
Developers
- Self-Host KeygenLearn how to self-host Keygen's Community Edition for free, or self-host our Enterprise Edition for your business.
- Keygen Relay NEWUse Keygen Relay to securely distribute node-locked licenses in offline and air-gapped environments.
- Developer CLIUse Keygen's official CLI to sign and publish software releases. Integrate with our SDKs for secure automatic upgrades.
- Documentation
- API Reference
- Changelog
- Security
- Source Code
Resources
- Read the Source CodeKeygen is an Fair Source software licensing and distribution API. View the source code on GitHub to learn more. Build vs BuyBusinesses of all sizes face the question of whether to build or buy a licensing solution.
- Open Source
- Fair Source
- Affiliate Program
- Careers
- Blog
- Get Support
Pricing
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Keygen + SendOwl

Use Keygen's powerful licensing system

Flexible licensing tools

Quickly add license key validation and user management to your software with Keygen's powerful software licensing API.

Licensed software distribution

Easily distribute download links that require a valid license key before allowing access by utilizing Keygen's distribution tools.

Learn about distribution

Simple checkout system

Using SendOwls's custom license key generation, you can use Keygen to handle licensing while SendOwl handles payments.

View our pricing