FigTree
FigTree is designed as a graphical viewer of phylogenetic trees and as a program for producing publication-ready figures. As with most of my programs, it was written for my own needs so may not be as polished and feature-complete as a commercial program. In particular it is designed to display summarized and annotated trees produced by BEAST.
NOTE FigTree has been superseded by PearTree which is available as a desktop app at http://github.com/artic-network/peartree and as a webapp at http://peartree.live