Keygen - A dead-simple software licensing API built for developers
Yamdu - Cloud-based film production management software for film, television and commercials.
CodeMeter - License Management
StudioBinder - Production management made modern.
Labs64 NetLicensing - Monetize your digital products and services
SoftwareKey Licensing System - SoftwareKey System is a set of software development tools that help programmers implement copy protection, license activation and management, metering, eCommerce, and business automation.