VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
File Encryption XP - A program designed for protecting confidential information stored on your computer.
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Chatlink.com - Anonymous communication platform
Windows BitLocker - This topic provides a high-level overview of BitLocker, including a list of system requirements, practical applications, and deprecated features.
Autocrypt - Convenient End-to-End Encryption for E-Mail