Jetico BCTextEncoder - Jetico BCTextEncoder is software that ensures your text-based communications are safe by allowing you to encrypt them.
QOwnNotes - QOwnNotes is a free plain-text notepad with markdown support for Linux, Mac OS X and Windows, that works together with ownCloud Notes.
TheLetterEncrypter - TheLetterEncrypter is a small (14KB download) AES-based text-encryption program.
EncryptPad - EncryptPad is an application for viewing and editing symmetrically encrypted text.
CTI Text Encryption - CTI Text Encryption is an encryption tool that can encrypt any text from messages and articles to codes, etc.
Notepads - Notepads is a modern, simple yet powerful text editor for Windows 10