It also allows you to exchange voice messages with anyone on the Internet. You can invite friends to join you using the invite function, and Coolspeak users can send and receive messages at no cost through the Coolspeak DeskTop application. They can also listen to voice mail messages through any telephone.

Coolcheck runs on your icon tray, informing you of any new messages. An auto-update feature ensures that you have the latest version. The online directory makes it easy to find other users and add them to the address book.

CoolSpeak operates both online and offline.