fdp(1) on Linux
The text 1e8dc70d1d06, as Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
filter for drawing directed graphs neato - filter for drawing undirected graphs twopi - filter for radial layouts of graphs circo - filter for circular layout of graphs fdp - filter for drawing undirected graphs sfdp - filter for drawing large undirected graphs patchwork - filter for tree maps