DNSCrypt Protocol is described as 'DNSCrypt is a protocol that authenticates communications between a DNS client and a DNS resolver. It prevents DNS spoofing. It uses cryptographic signatures to verify that responses originate from the chosen DNS resolver and haven't been tampered with' and is a DNS Resolver in the security & privacy category. There are more than 25 alternatives to DNSCrypt Protocol for a variety of platforms, including Web-based, Windows, Linux, Mac and iPhone apps. The best DNSCrypt Protocol alternative is DNS4EU, which is free. Other great apps like DNSCrypt Protocol are MullvadDNS, Quad9, Cisco Umbrella and Google Public DNS.