Graphviz

Graphviz
DevelopersAT&T Labs Research and contributors
Releasebefore 1991 (1991)
Stable release
16.1.0 / 4 September 2026 (4 September 2026)
Written inC
Operating systemLinux, macOS, Windows
TypeGraph visualization
LicenseEclipse Public License
Websitegraphviz.org
Repositorygitlab.com/graphviz/graphviz
A red–black tree plotted by Graphviz
Undirected graph showing adjacency of the 48 contiguous United States
A visualization of a JavaScript life cycle made by using Graphviz

Graphviz (short for Graph Visualization Software) is a package of open-source tools initiated by AT&T Labs Research for drawing graphs (as in nodes and edges, not as in bar charts) 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.