HP QuickTest Professional software provides functional and regression test automation for software applications and environments. It supports keyword and scripting interfaces and features a graphical user interface. It was originally written by Mercury Interactive which was acquired by HP in 2006.
HP renamed the latest version from Quick Test Pro to Unified Functional Testing. The complete name now is Unified Functional Testing 11.50 or simply UFT 11.50.
See their Wikipedia page for more information.