Abstract: Systems and methods for integrating third-party content and first-party content in a marketplace environment for presentation to a user of a computing device are provided. The method may include receiving content and publisher-specific metadata from a plurality of third-party publishers; storing the content and publisher-specific metadata in a catalog database. The database may include third-party publisher content and first-party content. The method may further include receiving a catalog query from a client device, identifying a set of catalogs to which a user of the client device belongs; generating query results, the query results including third-party publisher content and first-party content; filtering query results based on the metadata and set of catalogs; and sending the filtered query results to the client device for display on the client device.