Basic apps created in the App Maker wizard can be either publisher or subscriber in a loosely-coupled interaction and thus can interact with custom apps in a workspace. If the app has input parameters, it defines a standard subscription topic named propertychange with a payload containing all its input parameters.

Basic apps publish topics only if the views selected for that app have events. See Views for Mashups and Mashables for links to each built-in MashZone NextGen view with information on the events they support.