OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.

Jetico BCTextEncoder - Jetico BCTextEncoder is software that ensures your text-based communications are safe by allowing you to encrypt them.

Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.

GNUPGK - A GnuPG Frontend GUI made in C#.

AllMyNotes Organizer - AllMyNotes Organizer is a multi-functional hierarchical information manager for Windows.

TheLetterEncrypter - TheLetterEncrypter is a small (14KB download) AES-based text-encryption program.