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 + WordPress

Licensing and auto-updates for your WordPress software

Powerful licensing tools

From timed trials to fine-grained feature licensing—quickly add license key validation to your WordPress plugin or theme with Keygen's licensing API.

Learn about licensing

Plugin auto-update server

Don't worry about hosting your own plugin update server. Implement auto-updates into your WordPress plugin or theme using our distribution API.

Learn about distribution

Limit usage to particular sites

Enforce a variety of site-locked and multi-site licensing models with Keygen's APIs to implement powerful copy protection for your plugin or theme.

View our pricing