Pidgin naravno, a moj licni izbor je
trillian
The Ultimate Instant Messenger
AVAILABLE FOR ALL EDITIONS
Astra
AIM
Yahoo!
ICQ
Windows Live (MSN)
MySpaceIM
Google Talk
Jabber/XMPP
AVAILABLE FOR WINDOWS CURRENTLY
Facebook
Twitter
Skype
Bonjour
IRC
POP3 Mail
IMAP Mail
naravno imas ga i u portable varijanti
:D