Chalk – a collaborative chalkboard from 37 signals

Meet Chalk. Chalk is an iPad only web app that is designed to be a collaborative chalkboard.  And best of all, it’s free — and — it’s a web app.  No app store downloads to find, just go to http://chalk.37signals.com in your ipad web browser. Awesome.

Oh, and if you thought you’d have a quick look on your desktop computer, think again. Unfortunately, this really is iPad only!