[Free] U2Server .. did you guys know about this one ?

[. m a r c o s a u g u s t o]

http://moock.org/unity/u2server/

Looks like it's only for sharedobjects. and look limited to they apps too...

starts on 100dollars / 100 users but you have to buy some app too...

it's on java.. the protocol is proclaim:

UPC

Overview
UPC stands for Unity Procedure Call. It is a simple communication
protocol for invoking methods on the server. A UPC call looks like the
following:

Some nice facts:

Stress tested and stable.
Intuitive room-based architecture and event model (onRoomInit(),
onAddClient() etc).
Built-in XML messaging protocol.
Store persistent server, room, and client attributes to a database or
the file system.
Exhaustive logs for debugging.
Supports any socket-based client application, including Java,
Macromedia Flash (see UClient for Macromedia Flash), C++, etc.
Ridiculously customizable and extensible. Change or extend any part of
the server

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