Process Explorer - The top window always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window depends on the mode that Process Explorer is in: if it is in handle mode you'l…
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
System Informer - A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Official successor to Process Hacker.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
Process Monitor - Monitor file system, Registry, process, thread and DLL activity in real-time.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.