Bind

Also known as named, Berkeley Internet Name Domain, BIND9

BIND () is a suite of software for interacting with the Domain Name System (DNS). Its most prominent component, named (pronounced name-dee: , short for name daemon), performs both of the main DNS server roles, acting as an authoritative name server for DNS zones and as a recursive resolver in the network. As of 2015, it is the most widely used domain name server software, and is the de facto standard on Unix-like operating systems. Also contained in the suite are various administration tools such as nsupdate and dig, and a DNS resolver interface library.