Graphviz

Description

The Graphviz layout programs take descriptions of graphs in
a simple text language, and make diagrams in several useful
formats such as images and SVG for web pages, Postscript for
inclusion in PDF or other documents; or display in an interactive
graph browser. (Graphviz also supports GXL, an XML dialect.)

Graphviz has many useful features for concrete diagrams, such as options for colors, fonts, tabular node layouts, line styles, hyperlinks, and custom shapes.

In practice, graphs are usually generated from an external data sources, but they can also be created and edited manually, either as raw text files or within a graphical editor. (Graphviz was not intended to be a Visio replacement, so it is probably frustrating to try to use it that way.)

Original URL

http://www.graphviz.org/

http://www.graphviz.org/