The No-IP Dynamic Update client sits in the back ground and monitors your dynamic IP address. Whenever it changes it sends up update to our system to update your No-IP.com account DNS host names. The client supports multiple hosts, group updates and also runs as a daemon running in the background when you are not logged into the system insuring that your IP address is always current.
The No-IP service is free up to 5 hostnames and no commercial use. Upgrades are available if you require more than 5 hosts or wish to use your own personal domain name.