QTP Licences and Versions

QTP has two types of License;

1. Seat or Node locked License,
2. Concurrent or float license.

We have to use Seat license from fixed system/machine and Concurrent License, we can use from any system but one user at a time. If we want multiple concurrent licenses that we can purchase.
QTP has UNI code support.
Version History of Quick Test Professional
Astra Quick Test (Mother tool of QTP) 1.0 to 5.0
QTP derived from Astra Quick Test and influenced by Win Runner. 
Quick Test Professional

1. 5.6 – Nov 2002
2. 6.5 – 2003
3. 8.0 – 2004
4. 8.2, 8.3 –2005
5. 9.0,9.1-2006
6. 9.2- 2007 Mercury Interactive
7. 9.5 –2008 H.P
8. 10.00 –2009 January 11.0---LATEST VERSION