Collection.
Graphviz is a set of graph drawing tools.
It includes:
- dot: makes hierarchical layouts of directed graphs
- neato: makes "spring" model layouts of undirected graphs
- lefty: a programmable graphics editor
- dotty: a customizable interface written in LEFTY
- tcldot: a customizable graphical interface written in TCL
- libgraph: the base library for graph tools
- various associated utilities
