http://www.cs.wisc.edu/~ghost/
also available is GSView version 4.61 beta (11/27/2004).
http://www.cs.wisc.edu/~ghost/gsview/
Ghostscript is a freeware postscript interpreter/converter for generating Acrobat (PDF) documents, and GSView is a graphical document viewer that uses Ghostscript as its display engine
Source: OS/2 News and Rumors