No-IP - Dynamic DNS and Managed DNS Provider
Duck DNS - Free dynamic DNS hosted on Amazon VPC
FreeDNS by Afraid.org - Free DNS hosting, lets you fully manage your own domain. Dynamic DNS and Static DNS services available. You may also create hosts off other domains that we host upon the domain owners consent, we have several domains to choose from!
Dynu Dynamic DNS - Free dynamic DNS service with powerful features
Dynu - Dynu provides several services like email & SSL, dynamic DNS, and domain registration.
ClouDNS - ClouDNS is a platform that allows users to keep their websites, data, and network security all the time.