i went to google and searched for "state machine" and "flow diagram", besides the 2110 hits, there were the following sponsored links:
www.pacestar.com/edge
www.arlingsoft.com
www.eventhelix.com
www.smartdraw.com

eventhelix looked interesting when i looked at it before. the DNS lookup where i am at now is broken selectively (google & 8052.com work, eventhelix and yahoo and dice don't) so i didn't look at the links.

james