OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
MobaSSH - Enhanced SSH server for Windows with Unix tools and much more
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.