BIND - BIND is by far the most widely used DNS software on the Internet.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
PowerDNS - PowerDNS offers open source DNS software, services, and support.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
djbdns - The djbdns software package is a collection of Domain Name System tools created by Daniel J.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.