This is not new, but I’m bookmarking it here for later reference, as it’s really useful.
Instant Domain Search is an Ajax application that informs you the availability of .com, .net an .org domains, while you type, i.e., in real time!
Some different price offers are also displayed.
It does save you a lot of time!
And if you’re concerned about prying eyes, you can now use it over https.