CopyCheq is a software licensing and protection system that protects your software or service without audits, lawsuits, hardware, or government. It can be integrated into your application's installer using JExpress, or included inside your application.

This release supports an "expires_on" action and tracks the OS, version, and any extra data that you'd like. Licenses can be per user, per computer, or floating.

CopyCheq – Freecode