TNT stands for "Tree analysis using New Technology". It is a program for phylogenetic analysis under parsimony (with very fast tree-searching algorithms), as well as extensive tree handling and diagnosis capabilities. It is a joint project by Pablo Goloboff, James Farris, and Kevin Nixon.
As of November 2007, the project was subsidized by the Willi Hennig Society, and thus the program is now made freely available, upon agreement on the terms of the License.
More here.
