TreeView is a simple program for displaying phylogenies on Apple Macintosh and Windows PCs.TreeView provides a simple way to view the contents of a NEXUS, PHYLIP, Hennig86, Clustal, or other format tree file. While PAUP and MacClade have excellent tree printing facilities, there may be times you just want to view the trees without having to load the data set they were generated from. The PHYLIP package contains tree drawing programs which offer a greater variety of trees than TreeView, but are somewhat clumsy to use. The forthcoming PAUP* for Windows does not have a graphical interface, hence TreeView allows you to create publication quality trees from PAUP files, either directly, or by generating graphics files for editing by other programs.