BIND
BIND (Berkeley Internet Name Domain, previously: Berkeley Internet Name Daemon) is the most commonly used DNS server on the Internet, especially on Unix-like systems, where it is a de facto standard. Supported by the Internet Software Consortium, it was originally created by Paul Vixie in 1988 while working for DEC. Like Sendmail, FTP, and other systems dating back to the more laissez-faire earlier days of the Internet, BIND has had a high number of security vulnerabilities over the years. Recent versions have attempted to re-engineer the system to correct them. djbdns is an alternative DNS system.
