You could have downloaded SplitsTree 4.12.3 for Mac from our software library for free. This Mac download was scanned by our built-in antivirus and was rated as virus free. This free software for Mac OS X was originally produced by Universität Tübingen. The software lies within Education Tools, more precisely Science. The most popular version among the application users is 4.1. The unique ID for this app's bundle is com.install4j.1505-7129-3447-4151.1691242142.
From the developer:
SplitsTree is the leading application for computing unrooted phylogenetic networks from molecular sequence data. Given an alignment of sequences, a distance matrix or a set of trees, the program will compute a phylogenetic tree or network using methods such as split decomposition, neighbor-net, consensus network, super networks methods or methods for computing hybridization or simple recombination networks.
You may want to check out more software for Mac, such as Genealogy Pro, sciatrope or Curvus Pro X, which might be similar to SplitsTree.