DNScapy is described as 'DNS tunneling tool. The code is very light and written in Python. It includes a server and a client. The server can handle multiple clients' and is an app in the Security & Privacy category. There are five alternatives to DNScapy for a variety of platforms, including Linux, Android, Mac, Windows and iPhone. The best alternative is DNSCrypt Protocol, which is both free and Open Source. Other great apps like DNScapy are OpenDNS DNSCrypt Proxy (Free, Open Source), Iodine (Free, Open Source), icmptx (Free, Open Source) and SlowDNS (Freemium).
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.