Reflection X was the name of the initial X server provided in the Reflection suite of products.

Years later Reflection X Advantage was created as a way to provide features such as connectivity over high-latency networks, network fault-tolerance, session suspension and resumption, session sharing, multiple-platform support, and centralized management.

Now that legacy Reflection X has been retired, next-generation Reflection X Advantage (in version 18) has been renamed to simply Reflection X.