These examples demonstrate graphs where edges between nodes don’t have a direction.

Cluster relations in a graph highlighted using gvmap

Color wheel, 33 colors. Neato layout

Entity-Relation Data Model

Grid

Intranet Layout

Mind map of Happiness, twopi graph

Module Dependencies

Partially Transparent Colors

Philosophers dilemma. Neato layout.

Process

Radial Layout of a Network Graph

Undirected Graph Clusters

Undirected Large Graph Layout Using sfdp