When we first unveiled Google Wave a few months ago, one of the fundamental concepts we discussed was the vision for wave as an open communications protocol. We are happy to announce that the developer instance of Google Wave is now available for experimental interoperability testing with other wave providers. This means that if you are interested in building a service that uses the Google Wave Federation Protocol, you can begin prototyping with a tool like FedOne against WaveSandbox.com.

Since Google Wave Federation Day, there have been a number of developments:

• The Google Wave Conversation Model Spec (draft) was published to provide more clarity to implementors of the spec
• The FedOne client was updated to the new model spec and now displays character by character updates
• Echoey the agent was built to help you experiment with developing your own wave provider

If you'd like to dive in and get started, please check out the introductory docs. You can learn more by reading the more detailed status note on the wave protocol forum. Please keep in mind that things are e