This disclosure relates to facilitating communication between widgets of cross-platform applications. An exemplary system includes computing components configured to execute an application shell. The system is configured to cause the application shell to do the following. The application shell instantiates a cross-platform application comprising a plurality of application widgets. The application shell then determines that a first application widget of the plurality of application widgets executes instructions through an execution container of the cross-platform application. The application shell then receives a request comprising criteria from the first application widget, wherein the criteria specify an application widget to listen for communications from. The application shell then receives a communication from the second application widget and determines that the communication matches the criteria of the request by the first application widget. Finally, the application shell transmits to the first application widget an update containing data from the communication.