ViewDNS.info - Free DNS related tools including Reverse IP Lookup, DNS Propagation Checker, Chinese Firewall Test...
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
Whats My DNS - Instantly check your domain names current IP address and DNS record information against multiple name servers located in different parts of the world.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
NsLookup.io - A simple and powerful tool for querying DNS records
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.