ETE 3 (Environment for Tree Exploration)

ETE (Environment for Tree Exploration) 3 is a Python toolkit for the manipulation, analysis, and visualization of phylogenetic and other hierarchical trees. While version 4 is the actively developed major release, ETE 3.1.3 is the last stable version of the 3.x series, primarily receiving maintenance updates. It offers a comprehensive API for tree handling, node annotation, and customizable tree drawing into various image formats.