System, device, method, and computer program and computer program products for providing communicating between devices having similar or dissimilar characteristics and facilitating seamless interoperability between them. Computer program software and methods of and systems and devices for sharing of content, applications, resources and control across similar and dissimilar permanently or intermittently connected electronic devices. Devices, systems, appliances, and the like communicating and/or interoperating within the framework provided. An interoperability runtime, such as a DartRuntime provides a method and system for establishing the tight coordination of control, data and operations between separate processing units of a running application or Dart whether the processing units are running on single device or across team of recruited devices. This is accomplished by event driven system which ensures serialization and synchronization of events flowing thorough processing units of application so that processing units can have access to directives in same order needed to coordinate and synchronize data and operations between processing units.