Scale gene tree parsimony analysis made easy. DupTree is a program for phylogenetic analyses using gene tree parsimony. That is, given a collection
of binary gene trees, DupTree searches for a species supertree that implies the fewest number of gene
duplication events. The user input is a list of rooted or unrooted, binary gene trees in Newick format.
DupTree first builds an intitial species tree using a stepwise addition algorithm. Next, DupTree
searches for a better species tree using a standard search heuristic of choice starting from the initial
species tree. The output is a species tree(s) with the lowest reconciliation cost among all trees
encountered during the heuristic search, along with the reconciliation cost for each individual gene
tree.

The license of this software is Freeware, you can free download and free use this calculator software.