Abstract: A system efficiently generates template-based applications for interacting with digital content. The applications are available to multiple kinds of application platforms and can be installed and run on such platforms, thereby allowing users to access and interact with rich, multimedia content on the application platforms. The content delivered to the application platforms is also adapted according to the properties of these platforms.

Abstract: Among other things, a publisher of digital content items is enabled to select a digital content item to offer to another party who will present it to users. The publisher defines terms under which the other party may present the digital content item to the users and receives a request from the other party to permit the other party to present the digital content item to the users. The request includes a location of a presentation context to which the request applies. The publisher is enabled to respond to the request.