Paup
Overview
Paup: Phylogenetic Analysis Using PAUP:
This appears to be an alpha version application, with the FAQ last updated in Feb 2007 and the manual dated 2017.
This is the command-line version, not the GUI version.
Using
Use the module name paup
to discover versions available and to load the application.
Multicore
The Paup
application only runs on a single core - there is currently now parallelization to it as details within the FAQ: