Graphviz
Graphviz (short for "Graph Visualization Software") is a package of open-source tools initiated by AT&T Labs Research for drawing graphs specified in DOT language scripts having the file name extension "gv". It also provides libraries for software applications to use the tools. Graphviz is free software licensed under the Eclipse Public License. Software architecture. Graphviz consists of a graph description language named the DOT language and a set of tools that can generate and/or process DOT files: Applications that use Graphviz. Notable applications of Graphviz include: