Generally, VOC++ is an extension to VOC engine which is designed to work on high-loaded chat-servers. It is written in PHP, but uses C++ for Voc-daemon -- the special program to handle multiple user-connections. With Voc you can establish a chat which will serve hundreds of visitors simultaneously. And it's html-based, so your chatters can use it from almost any browser. The VOCc++-engine includes a lot of features so it will be interested not only for a big chat owners, find more at the http://vocplus.creatiff.com.ua