RealDNS is an application that updates your hostnames with the latest IP address of your computer through dynamic DNS providers, such as Dyn, NoIP, FreeDNS, ChangeIP, DuckDNS, XpertDNS, Strato, DynDNS.it, DtDNS, EasyDNS, DNS Made Easy, CloudFlare, Google Domains, and Namecheap, so that you will always have an updated hostname allowing you to connect to your computer/devices from everywhere.