Jetico BCTextEncoder - Jetico BCTextEncoder is software that ensures your text-based communications are safe by allowing you to encrypt them.
Virtru - Virtru is your data privacy force field, wrapping and protecting emails and files wherever they're shared. Easy-to-use data security software for business. People also askIs Virtru Hipaa compliant?
GNUPGK - A GnuPG Frontend GUI made in C#.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
TheLetterEncrypter - TheLetterEncrypter is a small (14KB download) AES-based text-encryption program.
Encyro - Use Encyro to send sensitive messages and files to your customers and service providers, including accountants, loan officers, health coaches, and others. Stay organized and forward documents from your mobile device.