PSPM/2 v1.16 is available for download at hobbes:
http://hobbes.nmsu.edu/cgi-bin/h-search?key=pspm116.zip
"This package provides a graphical view to the process tree with kill features and process details. This is a clone of the IBM internal PSPM/2 program of the OS/2 DevCon, but unlike that can use process status lists larger than 8 Kb of size and be configured via color and font palettes of the Workplace Shell. English and german National Language Support."
Source: OS2.jp