I use Cyb Chatbox Link. It works fine just like all Cyb products. You can see it in action on my site Link
As mentioned above Cyb Chatbox is good but it may lack in functionality, you may want to look at much more robust Ajax Chat integration with vBulletin https://blueimp.net/ajax/ You can find integration mod in vbulletin-germany.org if I good remember. Chat is great addition to forum but the problem with it is that most of chat mods/scripts are server resources hogs, if you have no powerful server your server load averages might jump sky high. :yes:
