Keygen - A dead-simple software licensing API built for developers
Bytes Software License - Leading provider of software licensing services and security services. Bytes solutions ensure businesses achieve maximum IT efficiency and security.
Labs64 NetLicensing - Monetize your digital products and services
WebCops - With more than 30 years of experience in copy-protection and encryption. Link Data is making protection for CD, DVD, USB and web on Windows, Mac and Linux.
LicenseSpring - Reliable and easy to use License-As-A-Service (LaaS) for for any software application
wyDay LimeLM - Use LimeLM to add hardware-locked licensing, online activation, and timed trials to your app.