1. PowerDNS offers open source DNS software, services, and support.

  2. Constellix is a cloud-based traffic management suite offering DNS services and an integrated network monitoring solution.

  3. Nuage provides domain naming services.

  4. Domain Name Service with low cost hosted DNS, an easy to use web interface, and a REST API for automation. Hosting DNS has never been so simple.

  5. Reliable, resilient, low-latency DNS serving from Google’s worldwide network of Anycast DNS servers.

  6. BuddyNS is the fastest-to-synchronize DNS service on the Internet.