Abstract: Techniques for filtering and promoting application store applications are described that can be employed to provide filtered application information and/or application promotions to client devices. The filtering and promoting can be based at least in part upon system information that describes configurations and capabilities of the client devices. In one or more embodiments, various system information for a client device is detected. The detected system information for the client device is used to filter application data in an application catalog. Page information to be provided to the client device for interaction with the application catalog is then ascertained using the filtered application data. The page information is sufficient to enable the client device to render targeted application store pages having filtered application information and/or promotions that are selected based on the detected system information.