Bespoke Dynamic DNS Updater is an open source dynamic dns hostname updater client for DNS-O-Matic, Amazon Route53 and Dnsimple. It runs on Windows and is written in C# and is built on the .NET Framework 4. Learn more.
lhost.me is a hosts file shortcut for local web development. It's a free service that eliminates the need to manually add entries to the hosts file when developing multiple websites locally. More info.