PowerDNS - PowerDNS offers open source DNS software, services, and support.
Tool.Domains - Search free to register expired domains
dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
Brandpa - Domain names for startups
Unbound - Unbound is a validating, recursive, and caching DNS resolver.
Namelix - AI business name generator