Miranda IM Client
Miranda IM is a multi protocol free instant messenger client. Included in
0.6.8 are all the latest version of the protocols Miranda supports
(AIM (AOL Instant Messenger), Gadu-Gadu, IAX (Inter-Asterisk Exchange), ICQ,
IRC (Internet Relay Chat), Jabber, MSN, Netsend, Tlen, Yahoo). Smaller, faster, easier.
Easy Message
The ultra-lite instant messenger for MSN, AOL, ICQ, and Yahoo. One of the
smallest instant messenger with a download size of 240K.
Fire Instant Messaging Client
Fire is a free Instant Messaging client for Mac OS X. It supports all of the
most popular Instant Messaging services in one easy-to-use application - AIM,
ICQ, IRC, Jabber, MSN, Yahoo.
GAIM IM Client
Gaim is a multi-protocol instant messaging client for Linux, BSD, MacOS X,
and Windows. It is compatible with AIM (Oscar and TOC protocols), ICQ, MSN
Messenger, Yahoo, IRC, Jabber, and Gadu-Gadu.
Trillian IM Client
Trillian 0.74 Basic is completely free, with no spyware and no ads. Connects
to all major chat networks, including AIM®, MSN®, ICQ®, Yahoo!® and IRC.
Yahoo Messenger
Chat with friends for free and enjoy stealth settings, PC calls, file
sharing, photo sharing, SMS, emoticons, streaming radio, and more.
MSN Messenger
See, hear, share, instantly.
Google Talk
GTalk is in beta and requires a Gmail or Google Account username and
password. If you don’t have a Google Account or have not enabled
your Google Account for Google Talk,
sign up here.
Jabber
What is Jabber? It is an open-source instant messaging platform that uses
an open, XML-based protocol to create the standard functionality people
expect of an IM system.
Kopete, KDE Instant Messenger
Kopete is a flexible and extendable multiple protocol instant messaging system
designed as a plugin-based system. All protocols are plugins and allow modular
installation and configuration (KDE, Linux).
Licq - ICQ Clone for Linux
Licq is a multi-threaded ICQ clone written mostly in C++. It uses an
extensive plugin system to manage many different functions. The main gui is
written using the Qt widget set.
AIM
AOL Instant Messenger, is a free instant messaging service.
ICQ Instant Messaging
ICQ (short for ‘I Seek You’) is about creating simple, massively
popular ways to communicate online. From the first internet-wide instant
messenger launched in 1996.
Instan-t Messenger
Establish a multi-person chat session where you can simultaneously chat
with users from MSN, AOL, Yahoo!, ICQ and Instan-t in the same chat session.