Kevin Rose, founder of popular news site digg has been working on a new site + application with Leah Culver, Daniel Burka, and Flash/Flex/AIR developer Shawn Allen from Stamen Design. Of notable interest, they offer a desktop application as a companion to the browser-based application. What’s that application built with? Why, Adobe AIR, of course!

What is it?
Pownce is a way to send messages, files, links, and events to your friends. You’ll create a network of the people you know and then you can share stuff with all of them, just a few of them, or even just one other person really fast.
Website + App
You can access all of your Pownce notes just on our website or you can download a small program for your computer.

The software is available right now for Windows and Mac users and will available for Linux soon too. It takes advantage of a new technology from Adobe called AIR, which is super useful.

I’ve been using the app for a couple of hours now and I’m really liking it. It allows me to send messages, links, files, and event invites to individual friends, my group of friends, or the public. It’s kind of like Twitter + IM + Facebook. Very, very cool.

Pownce is currently in a private alpha that is invitation-only. You can apply to be added to the alpha here.