We describe a tool that enables users to record and visualise runtime behaviour of
software applications developed in Java. The execution trace, stored in the form of an
XML le is visualized using 3D call graphs that are an extension of the Cone Tree infor-
mation visualisation technique. This tool gives the user the ability to create several call
graph views from a program's execution trace, providing additional representations of the
program execution to both novice and expert programmers for the purposes of program
execution analysis