SubEthaEdit - SubEthaEdit Homepage
Jetico BCTextEncoder - Jetico BCTextEncoder is software that ensures your text-based communications are safe by allowing you to encrypt them.
Zoho Writer - Create. Review. Distribute
TheLetterEncrypter - TheLetterEncrypter is a small (14KB download) AES-based text-encryption program.
iNotepad - Write and organize all your texts and notes on Mac.
GNUPGK - A GnuPG Frontend GUI made in C#.