iTOL
iTOL (Interactive Tree of Life) is a web-based tool for displaying, annotating, and exploring phylogenetic trees. It supports a wide range of tree layouts, including rectangular, circular, and unrooted representations, and can visualize very large trees with 50,000 or more leaves. Interactive navigation, advanced search, and extensive annotation options make iTOL suitable for both exploratory analysis and the preparation of publication-quality tree figures.
Key benefits
Interactive visualization and manipulation of phylogenetic trees
Supports rectangular, circular, and unrooted tree layouts
Scales to very large trees with tens of thousands of leaves
Extensive annotation and styling options
Advanced search and navigation within complex trees
Export in bitmap and vector graphic formats
Web-based access without local installation
Applications
Visualization of phylogenetic and taxonomic trees
Annotation of trees with metadata, symbols, colors, and labels
Exploration of large-scale evolutionary datasets
Comparison of clades, taxa, and tree topologies
Preparation of publication-ready phylogenetic figures
Presentation of cladograms and phylograms in different layouts
Intended use
iTOL is intended for evolutionary biologists, microbiologists, taxonomists, bioinformaticians, and other life science researchers working with phylogenetic trees. It is particularly suited for users who need an interactive and scalable environment for exploring, annotating, and presenting large or complex tree datasets.