Jetico BCTextEncoder - Jetico BCTextEncoder is software that ensures your text-based communications are safe by allowing you to encrypt them.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
TheLetterEncrypter - TheLetterEncrypter is a small (14KB download) AES-based text-encryption program.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
GNUPGK - A GnuPG Frontend GUI made in C#.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.