The table below summarizes the key differences between the StructsViz binary only version and the StructsViz source code version. Notation used in the table:

EVAL: evaluation version of the StructsViz package.
BIN: binary only version of the StructsViz package.
SRC: source code version of the StructsViz package.

Functionality	Eval	Bin	Src
Functionality	Eval	Bin	Src
Support for all the classes in System.Collections.*
Unlimited number of elements displayed.
Support for tree visualizers.
Can create visualizers for custom collections based on the existing ones
Can create new shapes for the diagram
Can create new layout algorithms
Source code available