By using Coccinella you are able to communicate with your friends through XMPP Protocol including Google Talk, iChat, Jabber, etc. Even you can add your AIM friends, ICQ, and MSN Contact to your Contact list and watch their status message.
Features in Coccinella
Whiteboard that allow you to sketch or make diagram or draw picture even mathematical function and then share it with your friends (visually communication), Cross Platform base under Windows, Linux and Mac OSX, Voice Communication via Voice Call, Sharing Documents through File Transfer in real time to your contacts, make Conference that allow you to chat with multiple people in one Chat Room and use whiteboard at the same time, Avatar, Emoticons, Secure Connection, Multi Language, and many more.
Download Coccinella Free
Coccinella is Free under Open Source Licence GPLv3 License. That means you can use it and download it Freely.
Source: http://thecoccinella.org/ (Official Site)