Stacks is a project mainly written in Java, it's free.
Visualiztion of a stack of networks as the topology of contemporary geopolitics.
Visualization of a stack of networks as the topology of contemporary geopolitics, written in Processing. Requires toxiclibs (http://toxiclibs.org/).
Rhizomes on rhizomes on arborial backbones.
Space bar generates new stacks, which do not correspond to any particular real stack.