With the Wave Federation Summit going on right now in San Francisco, I thought it would be worth checking out the latest build of the Wave Federation server (or Wave in a Box).<p>Wave in a Box is an implementation of most of the same technology that went into wave.google.com, including all of the operational transform real-time sweetness, a web client, a command line client (that's right, a vim-inspired version of wave) and support for federation (ie. interoperability of multiple servers on different domains).<p>You can get all of this, open source, right now. Just head over to:<p>https://sites.google.com/a/waveprotocol.org/wave-protocol/code/installation<p>and get going. Building and running of all the components is very straightforward and can be done in about 5 commands. A copy of Jetty is included in the build.<p>The only missing piece is a persistance layer, which according the FAQ is an active priority for the team.