As you might know that 123FlashChat are the best chat script providers and they support integration with almost all kinds of forums. But since xenforo is relatively new I think they didn't had notice xenforo yet therefore they don't have mod for xenforo. I'll contact them to make a mod for xenforo. But it would be much better if xenforo itself release that mod to integrate with 123flashchat. after all they are the leader in chat software and people will love to have a chat room in their forum. Integration with my website and with my 123flashchat are the two main reasons that continuously stopping me to buy xenforo. For everything else xenforo is very best for the price.