Unbound is more lightweight. All it does is recursive lookups, it has no option for being authoritative. If that's all you need then that's better. There are o

Unbound is more lightweight. All it does is recursive lookups, it has no option for being authoritative. If that's all you need then that's better. There are other options too, I don't know what makes Unbound better than PowerDNS Recursor or Knot Resolver.