Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
ShutUp10 - Free antispy tool for Windows 10
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
WindowsSpyBlocker - Block spying and tracking on Windows
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
WPD - The real privacy dashboard for Windows.