GPG4Win - GPG4Win is an encryption program for files and emails. The program encrypts emails and files so that they can only be read by those intended to receive them.
VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
CipherShed - CipherShed is a program that can be used to create encrypted files or encrypt entire drives...
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Windows BitLocker - This topic provides a high-level overview of BitLocker, including a list of system requirements, practical applications, and deprecated features.
PowerShell - Download WMF. Windows Management Framework contains the latest versions of PowerShell, DSC, WMI, and WinRM for older versions of Windows. PowerShell Module Browser. Search for PowerShell modules and cmdlets.