Modular, multiprotocol IM client with a GTK+ GUI. GNU Gadu 2 is a modular instant messaging client with a GUI written in GTK+. It currently supports Gadu-Gadu, Tlen.pl, and Jabber. It is able to load Perl scripts, dock in several window managers, play sounds, talk to other programs via UNIX socket, send SMS messages to Polish GSM operators, automatically check for updates, and use XOSD for displaying notices.