Google wave was announced at Google I/O 2009 and from what we’ve seen, it will indeed change the way we communicate and collaborate on the web. Google describes the concept of a wave as being “equal parts conversation and document”, and goes on to say a wave is “shared” and also “live”. The platform will be open-sourced and anyone will be able to build on top google wave. It will be very interesting to see what will be developed.
Google Wave – Developer Preview