Graphviz produces graphs and diagrams like the well-known commercial app OmniGraffle. However, diagrams aren\'t created by drawing, they are created by writing.The Macintosh port of the \"open-source\" automated graph layout software, featuring a new document-based GUI, export to PDF and many more bitmap formats, full alpha transparency, native font support and anti-aliasing.With AT&T Graphviz, you don\'t figure out the graph, the program does. Using a simple file format called dot, just describe which nodes should connect to which other nodes. And so the sophisticated layout routines are quickly rendered into various output formats.Here are some key features of \"Graphviz\":