Third party integration of plugins and widgets

This disclosure relates to third-party integration of native and platform-agnostic based software components into a third-party application. An exemplary method generally includes receiving, a workflow definition specifying one or more widgets to be loaded into a runtime environment, the one or more widgets comprising at least the first cross-platform widget. A runtime environment is instantiated for the first cross-platform widget. The runtime environment includes a bridge interface for facilitating communications between each widget in the one or more widgets and a second application. The first cross-platform widget is loaded into the runtime environment. When a communication between the first cross-platform widget and the second application is received, the communication is processed through the bridge interface. The bridge interface invokes an event at one or more of the first cross-platform widget or the second application based on the communication.