Web 2.0 tool Google Wave is a collaboration tool. It was introduced at the 2009 Google I/O Conference. It combines email, instant messaging, social networking, and wikis into a single web-based tool. It can communicate either synchronously or asynchronously as desired.

A key feature of Google Wave is the real-time operations. Users can actually see the keystroke of others. This real-time operation assures that all participants have the most current and up-to-date information.

Another key feature is the drag-and-drop file feature. It eliminates the need for separate file attachments and each file is immediately available to all participants in the "wave".