Coccinella (from the Latin "coccinella", ladybird) is a free and open-source cross-platform client for the XMPP/Jabber-instant messaging-protocol.
The software is written in the Tcl/Tk language, and it runs under BSD, Linux, Mac OS X, Solaris, Windows and all other platforms that support Tcl/Tk. Mats Bengtsson published it in 1999, under the name Whiteboard. It was renamed Coccinella in 2003.