Nobody mentioned this yet: ETE: http://etetoolkit.org/docs/latest/tutorial/tutorial_trees.html http://etetoolkit.org/docs/latest/tutorial/tutorial_trees.ht...

Nobody mentioned this yet: ETE: http://etetoolkit.org/docs/latest/tutorial/tutorial_trees.html http://etetoolkit.org/docs/latest/tutorial/tutorial_trees.ht... a fantastic tree visualization framework, its intended for phylogenetic analysis but can really be used for any type of tree/hierarchical structure