Google WaveGoogle Wave is an email program + instant messenger + collaborative document sharing & editing tool. It is using JavaScript and HTML5 on the client side running in browsers like Chrome, Firefox, Safari, including mobile platforms (iPhone, Android), and Java + Python on the server side, but the server side can be implemented with anything a customer wants. The tool was built with GWT and uses Google Gears to handle drag and drop which is not yet included in HTML 5. The tool needs a dedicated server to handle concurrent communications which is needed especially for large teams. The server can be outside in the cloud or inside in a private enterprise or, simply, in someone’s home.
watching the video conjures tons of ideas
edit: I should have mentioned, Google is making the whole shebang open-source, so there wouldn't be licensing issues.
