Since the time HP has launched UFT, there seems to be some confusion among beginners regarding QTP vs UFT.
QuickTest Professional popularly known by its acronym QTP is an automation testing tool developed by Hewlett Packard. HP QTP is used for GUI based functional and regression automated testing.
There is another tool by HP called Service Test which isused for API testing.
With the launch of version 11.5, HP decided to combine both the tools – QTP and Service Test – and named the combination as Unified Functional Testing aka UFT.
The current version of UFT is 14
You can find complete history and latest info about these tools at What is UFT (QTP)?