Dns Jumper - DNS Jumper is a portable freeware App which makes changing your DNS settings as easy as clicking a button , it is the world's first IPv6 supported Dns tool
BIND - BIND is by far the most widely used DNS software on the Internet.
GRCs DNS Benchmark - DNS Nameserver Performance Benchmark
dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
Public DNS Server Tool - Public DNS Server Tool is a small utility for changing the DNS servers in Windows XP, Vista, 7 and...
PowerDNS - PowerDNS offers open source DNS software, services, and support.