sim: SIM-IM (SIM Instant Messenger) sim: sim: SIM-IM is a free software package licensed under the GNU General sim: Public License (GPL). SIM provides an plugins-based instant messenger sim: with support for various protocols. Based on the Qt library it works sim: on most operating systems with X11, MS Windows and MacOS X. sim: sim: sim: sim: Packaged by Georgi D. Sotirov sim: