======Links======
[[http://www.nlnetlabs.nl/projects/nsd/|NSD]] is an authoritative only, high performance, simple and open source name server. \\
[[http://unbound.net/|Unbound]] is a validating, recursive, and caching DNS resolver. \\

[[http://www.isc.org/software/bind/|BIND]] is open source software that implements the Domain Name System (DNS) protocols for the Internet. It is a reference implementation of those protocols, but it is also production-grade software, suitable for use in high-volume and high-reliability applications.  BIND is available for free download under the terms of the ISC License, a BSD style license. \\