Closed source (free for non-commercial use), multi-platform "multiplayer engine", which offers an online UML like designer and code generator to create personalized cross-platform code that reflects your game structure and takes care of all communication. There are a few functions of the development tool that are not available for free and the project design is publicly visible. That are the only limitations. APlay generates code cross platform in C#, Flash, and C# for Unity. It is even possible to do Javascript via GWT.
an update to the details section on the APlay page, if I may:
APlay offers a free license also for commercial use. There are a few functions of the development tool that are not available for free and the project design is publicly visible. That are the only limitations.
Also, APlay generates code cross platform. Not only C#. Also Flash, also C# for Unity. It is even possible to do Javascript (via GWT, pure Javascript later).
The key message of our Engine is: You do not need to know anything about networking and you need not care. It is totally abstracted.
Thanks hcsama, your new information was incorporated into the description. I am happy to update it and make further adjustments as needed, just let me know. Robc.