Application development and debugging can be aided through use of a graphical user interface that allows for mapping the relationship between user interface components and/or between business logic components. Particularly, an application development tool can support at least two views for developing an event-based application. In a static view, all possible bindings between components can be illustrated and, in some embodiments, edited. For example, an event generator component may be represented as a first screen component with links to one or other screen components with each link representing a different event that triggers one or more actions handled by the other components. The views may also illustrate data bindings between components. The application development tool can include a dynamic view where event relationships and/or data bindings between object instances can be viewed as code is executed.