Update from 05.12.2007 - newer release available!
SIM is powerful plugin-based multiprotocol instant messenger, which includes support for ICQ, AIM, MSN, Yahoo!, Jabber IM protocols and also can post into your LiveJournal journal and communities.
SIM is based on Qt toolkit (ported by dmik).
Screenshots:

SIM and it's chat window.

OSD plugin notification at lower-left corner, contact is typing.

Weather plugin displays weather.
SIM IM reviews (in Russian):
Обзор от iXBT
Обзор от itc.ua (SIM в конце)
Обзор jabber-клиентов (в том числе SIM)
Note: This program requires GCC 0.6.1 runtime library.

