[Arkaan]

http://coinopsproject.freeforums.org/index.php

http://www.theisozone.com/arcade/

Also check out..

http://krikzz.com/

http://psx-scene.com/forums/multiman/

http://psx-scene.com/forums/f150/ope...0-9-2-a-62141/

In development..

http://ps-io.com/