After receiving reports from the community of some issues with the calculator, I've decided to release version 0.4 of the vSphere 4 and 5 Licence Calculator.
In addition to some bug fixes, this version also displays a graph for each edition of vSphere, instead of just Enterprise Plus.
The calculator can be downloaded from here
This tool can be used to calculate the license requirements for vSphere 5.
WARNING: By downloading this tool, you agree to the following statement(s):
This calculator is provided free of charge with no warranty provided. The use of this calculator is at your own risk. The author or distributor of this tool cannot be held liable for any loss or damages as a result of using this tool. This calculator has not been approved or funded in any way shape or form by any software vendor, reseller or partner, including VMware, Inc.
The rules and figures used in this calculator are subject to change without prior notice.