SubEthaEdit - SubEthaEdit Homepage
GNUPGK - A GnuPG Frontend GUI made in C#.
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.
CTI Text Encryption - CTI Text Encryption is an encryption tool that can encrypt any text from messages and articles to codes, etc.