An important part of any online game is the ability to communicate with your fellow players. Diablo will have text chat, and almost certainly have voice chat while you are in a game. However having a quality method of voice communication outside of the game is invaluable to a clan. Not only will it help improve your ability to interact within the game, it will help you reinforce the sense of community in your clan outside of the game. Below is list of the more prominent VOIP clients that are available today: