Which morphological analysis software packages are there?

Many cladograms are possible for any given set of taxa, but one is chosen based on the principle of parsimony: the most compact arrangement, that is, with the fewest character state changes (synapomorphies), is the hypothesis of relationship we tentatively accept (see Occam's razor for more on the principle of parsimony). Though at one time this analysis was done by hand, computers are now used to evaluate much larger data sets. Sophisticated software packages such as PAUP* allow the statistical evaluation of the confidence we have in the veracity of the nodes of a cladogram.