Abstract: Concepts and technologies are described herein for automatically installing and removing recommended applications. In accordance with some of the concepts and technologies disclosed herein, a marketplace server computer determines a recommended application for user, adds the recommended application to an entitlement associated with the user, and sends the recommended application along with instructions to automatically install the recommended application to a user device associated with the user. The installation of the recommended application might be part of a continual installation and removal of recommended applications.

Abstract: Concepts and technologies are described herein for user interface placeholders for application extensions. In accordance with the concepts and technologies disclosed herein, user interface placeholders are inserted into user interfaces to represent extensions that have been activated or inserted into an application program or file. The placeholders describe the extension, provide instructions for activating the extension via an entitlement process, display visual indicia associated with the extensions, and/or provide functionality that is executed by a device in response to detecting interactions with the placeholders. After completing the entitlement process, the application program, file, placeholder, or extension can be updated manually or by an application callback to reflect the user's entitlement to use the extension.

Abstract: Systems and methods are disclosed that assign and/or enforce usage rights for a software application. Further, the systems and methods assign and/or enforce usage rights for a software application with one or more users by decoupling the identity of the person who purchases the application from the actual users of the application. Additionally, the systems and methods provide for centralized built-in user assignment with support for multiple applications.