Graphviz

Hierarchy:

1. Applications
   • cmd/dot – main rendering application for various layouts of graphs and output formats
   • cmd – directory of applications
   • dot.demo – demo programs
2. plugin – Plugins of graph layout engines and output formats
3. Core libraries
   1. Graphviz layout engines
      1. rendering – rendering for layout engines
      2. utilities – low level utilities for layout engines
   2. lib – miscellaneous libraries
   3. Cgraph – abstract graph C library
      1. app – uncoupled application specific functions
      2. core – highly cohesive core
4. Low level utility libraries
   • utilities – low level cgraph utilities
   • lib/cdt – Container Data Types library