POPART: full-feature software for haplotype network construction

1. Haplotype networks are an intuitive method for visualising relationships between individual genotypes at the population level. 2. Here, we present POPART, an integrated software package that provides a comprehensive implementation of haplotype network methods, phylogeographic visualisation tools and standard statistical tests, together with publication-ready figure production. 3. POPART also provides a platform for the implementation and distribution of new network-based methods - we describe one such new method, integer neighbour-joining. 4. The software is open source and freely available for all major operating systems.