Quick Test Professional (QTP) is an automated functional Graphical User Interface (GUI) testing tool created by the HP subsidiary Mercury Interactive that allows the automation of user actions on a web or client based computer application. It is primarily used for functional regression test automation. QTP uses a scripting language built on top of VBScript to specify the test procedure, and to manipulate the objects and controls of the application under test. As part of a functional test suite, it works together with Mercury Interactive WinRunner and HP Quality Center and supports enterprise Quality Assurance.QTP is a UI automation framework designed mainly for Windows and Web-based applications. It works by identifying the objects in the application UI or a web page and performing the desired operations on them (like mouse clicks or keyboard events); it can also be used to capture object properties like name or handler ID etc. One of the most important topics in QTP is Object Identification.QTP uses a scripting language built on top of VBScript to specify the test procedure, and to manipulate the objects and controls of the application under test.