what application will run a .ps file?

Answer 1

The file extension ps indicates that the file is in postscript format. Postscript is a format supported by most printers. There are postscript viewers to display the document on the screen. One of the most popular free postscript viewer is ghostscript or ghostview (graphical front-end to ghostscript). Both of these are available at large software archives for UNIX and Windows based PCs. Check out the following URL for more information on external viewers including information on additional postscript viewers:

http://home.netscape.com/assist/helper_apps/