The Passive Privacy System Home Page
Science, Math, Applications, Communication Theory - Passive Privacy System. PPS is a specification for email programs to follow to exchange public keys and encrypt mail.
https://pps.sourceforge.net/
Paul Syverson Home Page
Science, Math, Applications, Communication Theory - Syverson, Paul. Covers his professional associations and areas of interest related to cryptography.
https://www.syverson.org/
Kremlin by Mach 5 Software
Kremlin Software Suite comprises Encrypt, Decrypt, Sentry, Secure Delete, Wipe utilities. Kremlin v3.0 is 160 bit cryptographic software suite providing Windows and MAC OS X seamless support. Easy to use and secure encryption and file deletion with free evaluation version.
http://kremlinencrypt.com/
Matt Blaze / crypto.com
Science, Math, Applications, Communication Theory - Blaze, Matt. Own site with resume, research papers and links to other cryptographic sites.
https://crypto.com/
Victor Shoup's Home Page
Science, Math, Applications, Communication Theory - Shoup, Victor. Home page of IBM researcher with links to his research papers.
https://www.shoup.net/