Though Google announced the discontinuation of its Google Wave project, but Wave is "still alive" and kicking in many ways as the underlying base for "Novell Pulse," a real-time collaboration environment for enterprises brings 'authoring, communication and social messaging' together in a single secure solution.
Novell Pulse helps enterprises retain flexibility and control while embracing social messaging and emerging collaboration paradigms. Longer-term, Novell Pulse provides an open collaboration framework that enables organizations to access third-party collaboration tools from one common interface. And it uses the Google Wave Federation Protocol to allow seamless integration with other next-gen co-editing and collaboration tools, such as Google Wave, as well as new extensions that 3rd parties build on top of the Novell Pulse platform.
Pulse is set to be available as a cloud service at first, with "on-site deployment" planned as a later option.
More Info: Novell Pulse