123 Flash Chat Moodle Module has been further developed now.
Basically there will be two modes available for the chat clients; flash client which used to be the most stable one, and the new html chat client which can work cross devices.
It has flash chat and PPV video chat software as well now. There is a ppm/ppv mode available for the new version of the module, and video quality has been tremendously enhanced.
Check details here Moodle Chat Module