The phylogenetic tree display program "TreeView" is now available for
Linux and Unix machines. TreeView X can read and display NEXUS and
Newick format tree files (such as those output by PAUP*, ClustalX,
TREE-PUZZLE, and other programs). It has a subset of the functionality
of the version of TreeView available for the Windows and Macs (it is
roughly equivalent to version 0.95 of TreeView).
TreeView X is open source and can be downloaded from http://darwin.zoology.gla.ac.uk/~rpage/treeviewx/.