The Snooper is a powerful tool that provides a hierarchical textual view of a hierarchy of objects. Individual objects discovered using the Snooper may then be added directly into the views provided by the Object Visualizer (page "The Object Visualizer").
The Snooper also includes a set of buttons that provide a simple and direct means for opening other tools of the IBM Smalltalk environment, such as visualizers, browsers, and inspectors, on objects of interest. In addition, the Snooper provides a code evaluation facility, a workspace, object searching, and limited views of its own.
The Snooper can be used in combination with the other tools of the environment to provide a powerful facility for investigating object structures and quickly gaining an understanding of program behavior.