This chat is developing in HTML, JavaScript and PHP. This is a good thing because it means it support difference device like Mobil, tablet and computer. It come whit to options AJAX and WebSocket If you have the system on rented server you are probably need to use AJAX but if you use server you can use the WebSocket server WebSocket is a good think because the client not loading same page again and again but open a connection to the save and holding the connection to the user leaving the client. The WebSocket solution uses the Ajax servers code. So commands is the same and up to date if you put extra commands in it. From Version 0.0.4 you can developed you own plugin. The plugin is a easy way to put extra commands in the system. In http://jugolo.dk You can see a plugin database whit plugin you can download. For support wee have this site [Danish] http://jugolo.dk/ [Englisg] http://jugolo.dk/english/