- Bind - The most widely used name server software.
- djbdns - A collection of DNS applications, including tinydns.
- Designate - DNS REST API that support several DNS servers as its backend.
- dnsmasq - A lightweight service providing DNS, DHCP and TFTP services to small-scale networks.
- Knot - High performance authoritative-only DNS server.
- NSD - Authoritative only, high performance, simple name server.
- PowerDNS - DNS server with a variety of data storage back-ends and load balancing features.
- Unbound - Validating, recursive, and caching DNS resolver.
- Yadifa - Lightweight authoritative Name Server with DNSSEC capabilities powering the .eu top-level domain.