Instant Domain Check
Here is an excellent example of a simple yet functional Ajax application. The Instant Domain Check let’s you start typing in a domain name and begins checking the results immediately. Although it is a simple and fun exercise, it is also very helpful. Using a base word to try and find an available domain is a snap.
“This easy tool will allow you to check the availability of domains instantly. There is no page load, you simply type your domain and the system will automatically query your input. Start your domain searching today!” Source : Instant Domain Check