Dynamic DNS client for Windows is described as 'It’s essentially a PAR‘ed up version of a slightly modified ddclient, packaged as a Windows service with an NSIS wrapper around it so that you can install/uninstall it a bit easier'. There are four alternatives to Dynamic DNS client for Windows for Windows, Linux and Mac. The best alternative is OpenDNS Updater, which is free. Other great apps like Dynamic DNS client for Windows are Marcs Updater (Free), DirectUpdate (Paid) and DDNS Updater (Free).
OpenDNS recommends that you use our client-side software to keep your dynamic IP updated for your network. The OpenDNS Updater will run in your system tray and send updates to your account whenever your IP address changes.
Your router doesn't support DynDNS, OpenDNS or DNS-O-Matic by default or is limited in number of dynamic DNS services? You can use this simple client to send IP changes to your dynamic account automatically.