Citrix offers XenDesktop in five editions, designed to enable everything from enterprise-wide desktop delivery or smaller, entry-level implementions.
Platinum: End-to-end desktop delivery solution with virtual application delivery, for the most flexible user access, complete performance monitoring and QoS capabilities, and remote virtual desktop support.
Enterprise: Integrated enterprise-ready system for cost-effective scalability, including virtual app delivery.
Advanced: Integrated enterprise-ready system for cost-effective scalability, without virtual app delivery.
Standard: Entry-level desktop virtualization.
Express: Limited, 10-user trial environment.