Unbound and NSD are pretty popular. Indeed. I use both Unbound and NSD quite heavily as do at least four of the Internet's root DNS servers. I use it for some

Unbound and NSD are pretty popular. Indeed. I use both Unbound and NSD quite heavily as do at least four of the Internet's root DNS servers. I use it for some of my authoritative DNS servers. Unbound is used by many on HN that block ads and malicious sites on their home router.