Hi,I've been working on this kind of project for these years,and my clients are from several countries,such as England, Saudi Arab. I have a strong voice and video chat server made by c++, and a chat control server made by c#, and a room control panel web application made by asp.net,and two kinds of chat client, one is made by delphi and one is made by java (based on java web start).
Please see your PMB.