Not sure how widely publicised this is but sounds very promising. Some of the very well known open source remoting projects have banded together to form The Universal Remoting group.

From osflash:

The Universal Remoting group’s purpose is to coordinate and unite efforts on open-source Remoting projects. The group is a joint effort of the amfphp, SabreAMF, fluorine, and RUBYAMF projects. Other Remoting projects who want to join in are welcome.

They currently have two projects, Universal Remoting Service browser and Universal Remoting documentation.

If anyone has any more details on this I’d be interested in finding out more, so drop us a comment below.