FreeWorld3D 2.0: http://freeworld3d.org

I haven't used it but it seems like it's exactly what you are looking for.

Edit: Ok it seems like FreeWorld isn't for free ^^

Last edited by Dark_samurai; 08/31/09 10:28.
ANet - A stable and secure network plugin with multi-zone, unlimited players, voip, server-list features,... (for A7/A8)!
get free version