The Berkeley Internet Name Daemon, an implementation of DNS.

BIND 8 Features
	-> DNS Dynamic Updates (RFC 2136)
	-> DNS Change Notification (RFC 1996)
	-> Completely new configuration syntax
	-> Flexible, categorized logging system
	-> IP-address-based access control for queries, zone transfers, and
	   updates that may be specified on a zone-by-zone basis
	-> More efficient zone transfers
	-> Improved performance for servers with thousands of zones
	-> The server no longer forks for outbound zone transfers
	-> Many bug fixes

WWW: http://www.isc.org/products/BIND/