WireViz is a tool for easily documenting cables, wiring harnesses and connector pinouts. It takes plain text, YAML-formatted files as input and produces beautiful graphical output (SVG, PNG, ...) thanks to GraphViz. It handles automatic BOM (Bill of Materials) creation and has a lot of extra features.

HalfViz is a graph visualization environment with a not-coincidental similarity to AT&T’s Nevermind-era, C-language classic GraphViz.<br />
It takes one of the central good ideas of GraphViz – the .dot graph description language – and scales things back in the name of simplicity of implementation and brevity of syntax. Remember, worse is better these days.<br />
The result is the halftone language; a dot-inspired, mostly-declarative format for describing graph relationships and styling the resulting nodes and edges.