Kleopatra - Kleopatra is a certificate manager and GUI for GnuPG.
Symantec Data Loss Prevention - Fully protect your data with the comprehensive detection technologies and unified policies of Symantec's industry leading Data Loss Prevention (DLP).
Enigmail - Security extension to Mozilla Thunderbird and SeaMonkey
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
OpenKeychain - OpenKeychain helps you communicate more privately and securely.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.