PlaneShift http://www.planeshift.it/
PlaneShift is a virtual fantasy world in which a player can start as a peasant in search of fame and become a hero.PlaneShift virtual world is persistent, and this means you can connect to it at every hour of day or night and you will always find players and npcs wandering our realms. You will be able to disconnect and reconnect again, the server saves the actual status of your character including his possessions.