code:REALbasic
Classes / Modules
A set of classes for storing and retrieving the drawing state of a Graphics object
A framework for creating and manipulating interactive graphical objects
A ListBox subclass (and support classes) that handle a hierarchical list, with associated tree-based structure
A set of classes for storing and retrieving the drawing state of an Object2D object
A set of classes for maintaining a property list (plist)
A set of classes for sending and receiving SNMP (Simple Network Management Protocol) messages
Note: The APIs for this code are in the middle of a major overhaul. The changes will require a good amount of modifications to any code you write using the existing, older version.
A framework for assisting with the implementation of multiple undo/redo.