KeyServer is tops among six software metering programs that tackle similar tasks in different ways. These programs can help you buy enough licenses to cover your legal requirements, but not one copy more. Software metering technology has matured to the point that metering accuracy is almost guaranteed. All the programs we looked at track every application users run on their computers, ensure there is a valid license for each program and stop people from running inappropriate and unlicensed software. What distinguishes applications is how they handle distributed metering stations, enterprise scalability and management.
Some programs focus on the users, others on the applications.
All six programs we tested can block server and local application usage. Queues for applications are popular features, as are tricks to verify that licenses are held by functioning, nonlocked computers. Every metering program has some method of allowing VIP users to access applications even when they would otherwise be locked out. With all this in common, you might expect these programs to be quite similar. You'd be wrong.