Pretty good privacy (pgp) was acquired by Symantec in June 2010. So PGP is now available for download from Symantec website. There are packages for Files, Email, Endpoint and Management. You can also download a command-line version of PGP should you need it.
Pretty Good Privacy Download
Pretty Good Privacy software is now a part of Symantec product. You can download PGP directly from Symantec website.