Apparatus and method for application execution

Provided are an apparatus and a method for providing an application in a mobile communication terminal, which store each identifier information on one or more applications, in a database; display a multi-execution window, discriminated from an application execution window displayed on a screen of the mobile communication terminal, on the screen; and receive a signal for selecting one among the one or more applications, execute the application corresponding to the selecting signal based on each identifier information and output the execution result on the multi-execution window.