Selling software, tweaks, or tools? License Key System is a ready-made license generation and validation service — REST API plus admin panel — for issuing, activating, binding, and revoking license keys, with example client-side validation snippets included.

What's inside:

• REST API for key issuance, validation, and revocation

• Admin panel to view, search, and manage all issued keys

• Activation-limit enforcement (cap activations per key)

• Device-binding module (hardware ID lock)

• Example client-side validation snippets (multiple languages)

• Setup + integration documentation

Who it's for: developers selling licensed software, plugins, or tools who need real activation control without building key infra from scratch.

Prerequisites: a VPS or any Docker-capable host, Docker + Docker Compose, a domain for the API endpoint, basic Linux comfort. Setup: ~30-60 min. Self-hosted only — expect €5-15/mo hosting. Single-business-use code license. 7-day refund if setup fails after following the guide and contacting support first.