A software execution control apparatus includes a reference information management unit for collecting and renewing reference information to be referred to for execution of a plurality of applications, a user message preprocessing unit for receiving a user message, extracting one or more components from the user message, and analyzing the user message based on the extracted components, a message processing unit for specifying one or more actions required by the user based on the analysis result of the user message, and an APP execution unit for selecting and executing one or more applications based on reference information managed by the reference information management unit.