8/10
Useful and easy-to-use.
This is the original program to view documents in the PostScript format (files having the extension .PS).
It can be also used to see PDF files, or even to convert Postscript (.ps ) into PDF.
Is It Free?
This software is available under an Open Source GNU Affero General Public License. Please note that this version is for Windows 64bit.
Other versions
There is also a version for Linux (64bit).