InstantBird is a mutli-protocol Instant Messenger that uses parts of Pidgin and Firefox, it is open source and is available to Windows, Linux and MacOSX.
Instantbird is a multi-protocol Instant Messaging client. Using it, you can connect to all your different IM accounts. It uses the Mozilla rendering engine to display IMs, and the Pidgin libpurple to connect to the different networks. Instantbird is a free and open source software. So you are free to use, distribute and modify it. The project is just on its first release, many features are not implemented yet. We hope you will like it and look forward to get your feedback!