AutoFlowchart is a excellent source code flowcharting tool to generate flowchart from source code. Its flowchart can expand and shrink. and can be export to Word/Visio/Bmp/SVG. You can pre-define the the width, height,Horizontal spacing and vertical spacing. Move and zoom is supported. It can help programmers understand, document and visualize source code. It supports C,C++,Pascal(Delphi)!