PowerDNS - PowerDNS offers open source DNS software, services, and support.
Infoblox DDI - Infoblox’s industry leading integrated, centrally managed approach to delivering enterprise-grade DNS, DHCP, and IP address management (DDI) supports current and evolving IT needs.
dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
Cisco Umbrella DNS-layer security - Cisco Umbrella DNS-layer security is a leading provider of network and recursive DNS services that provide the quickest and most effective way to improve your security stack.
Unbound - Unbound is a validating, recursive, and caching DNS resolver.
Cloudflare DNS - Install the free app that makes your phone’s Internet more fast, private, and reliable.