lejON, the LeJOS Odometric Navigator is a project which extends the LeJOS-API for LEGO Mindstorms bots. It adds a Java-API to LeJOS in order to control two-wheeled drives only by using motors and rotation sensors -- and nothing else.
Sakura is a Knowledge Navigator and User Interface for UNIX, which implements HyperMedia and its own windowing and packing system, both in the main program and in an extensive API for Tcl and other languages.