VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
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.
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Shadowsocks - A fast tunnel proxy that helps you bypass firewalls
Windows BitLocker - This topic provides a high-level overview of BitLocker, including a list of system requirements, practical applications, and deprecated features.
V2Ray - A platform for building proxies to bypass network restrictions.