Phil Edwards <phil@jaj.com> writes: > 2) GraphViz is from AT&T (http://www.research.att.com/sw/tools/graphviz/), > with a spinoff at www.graphviz.org, and last time I checked required > strange AT&T tools to build from source. Get a prebuilt binary. GraphViz is not free software, at least that's my reading of the license.