No-IP - Dynamic DNS and Managed DNS Provider
SerpWatch - Track your rankings with a fast and 100% accurate rank checker. Manage multiple locations and projects with full app integration. Try it for free for 15 days.
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!
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Duck DNS - Free dynamic DNS hosted on Amazon VPC
SEOmator - SEO website analysis & audit tool