Bluebeam Revu Open Licensing
Bluebeam released its Open Licensing fo Revu.
Before the introduction of the Open licensing (2015), you could only purchase the software Revu (Standard, CAD and eXtreme) as a perpetual license, based per PC. The perpetual means that you purchase the license one time and you can use as long as you want. To get access to updates, you can purchased for a small price a maintenance contract that is renewed each year.
The Open License works based on the number of users at the same time. In fact it is a floating license. So you buy a number of seat for you company license and that is the max number of users that can use the software at the same time. The maintenance is always included.