DirectUpdate - DirectUpdate is a dynamic DNS updater with many features.
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Duck DNS - Free dynamic DNS hosted on Amazon VPC
DDNS Updater - DDNS Updater checks for changes to the external IP address of a Microsoft Windows computer, and...
Dyn - Managed DNS, Outsourced DNS & Anycast DNS
Dynsite - The author is a freelance software engineer and contractor who develops programs for the Windows operating system.