Looking for ways to save money in your Citrix XenApp farm without impacting service levels?  Of course you are!  A company called XTS has created a free tool that you can use to evaluate the number of licenses needed for your Citrix XenApp environment.  You can download this free XenApp License Optimizer tool to find out if you are over or under subscribed based on actual usage.  And it is easy to get started! 

Simply enter your date range, your SQL information and go.  No install is needed and it runs in minutes.  On the results screen you can enter in your license count and approximately how much was paid per license (or TCO associated with each license) - then it will calculate how much you might be saving if you reduced your licenses to match your actual Citrix peak usage.  It works on Citrix MetaFrame XPe, XenApp 3, 4, 4.5 and on some XenApp 5 farms running on Windows 2003.  

You can learn more here -- http://www.xtsinc.com/dnn/Solutions/FreeXenAppUserConcurrencyCalculator/tabid/480/Default.aspx