MacGSView is a graphical interface for Ghostscript. Ghostscript is an interpreter for the PostScript page description language used by laser printers. For documents following the Adobe PostScript Document Structuring Conventions, MacGSView allows selected pages to be viewed or printed.
MacGSView was written by Bernd Heller.
MacGS was written by Jeff Schindall.
Ghostscript was written by Aladdin Enterprises.