Quick Test Professional , popularly know by its acronym QTP is the flagship functional automation testing tool from Mercury Interactive now acquired by HP.
It is an icon based tool, which automates the functional & regression testing of an application
It also supports the Record and Playback feature, that helps the non-technical people for automation front.
QTP is easier to use and implement for both technical & non technical testers in comparison to other functional testing tools available.
Quick Test is the market leader in Functional Automation Tool with over 60% market share
QTP's Scripting Language is VB Script which is easy to use , understand .
Supports different environments like SAP,Sieble,.net,java what you need to do is use appropriate Add-ins for this purpose.
Debugging is easier with QTP
Regards,
Nilanjan.