在线同步书写/编辑服务
SynchroEdit is a browser-based simultaneous multiuser editor, a form of same-time, different-place groupware. It allows multiple users to edit a single web-based document at the same time, and it continuously synchronizes all changes so that users always have the same version.
ajax im ("asynchronous javascript and xml instant messenger") is a browser-based instant messaging client. It uses the XMLHTTPRequest object in JavaScript to send and receive commands to and from the server. No refreshing of the page is ever needed for this "web application" to work, as everything is updated in real-time via JavaScript