A smaller, faster, and easier IM client
Miranda IM is an open source, multi-protocol instant messaging client designed to be very light on system resources, extremely fast and customizable. A powerful plugin-based architecture make Miranda IM one of the most flexible clients on the planet.
Licq is an ICQ/AIM clone written fully in C++. It uses an extensive plugin system to manage many different functions including the MSN protocol. The main GUI is written using the Qt widget set.
Fire is a multi-protocol instant messenger client for Mac OS X based on freely available libraries for each service. Currently Fire handles AOL Instant Messenger®, ICQ®, MSN® Messenger, Jabber, limited IRC, Yahoo!®, and Apple Bonjour communications.
A Miranda IM plugin that adds support for exporting every message, URL or File you receive to a text file. Messages are exported to one file per user. New messages are exported when you receive them. Can be used as history management.
A free Win32 instant messaging client. Smaller, Faster, Easier.
ICQKID2 is crossplatform library which presents basic methods for using OSCAR protocol. It's easy to build your own icq-bot or icq-client with this library.
ICQMail is ICQ->Email gateway daemon
PlanetaMessenger.org is a Instant Messenger with support to all well known instant messenger networks including ICQ,MSN,AIM,Yahoo! and Jabber through a powerfull plugin engine. PlanetaMessenger.org support multiples look and feels, plugins and profiles.
Kopete plugin, which allow to ignore spam messages by using simple answer/question scheme. Плагин для Kopete, фильтрующий спам, за счет использования схемы вопрос/ответ.
Proteus is a multi service instant messaging application for Mac OSX. At the core of Proteus is this Service Controller! This controller provides a common interface for any number of applications to plug into. Each application that knows how to commun
Multiprotocol plugin-based instant messenger for X11 (optionaly support KDE), Windows and MaxOS X.
Ayttm is an instant messenger program, supporting various protocols such as MSN, Yahoo, AIM, Jabber, and more. It is the heir of the Everybuddy project, and aims to continue improving the program and addressing its shortcomings.
Boltun is a chat bot plugin for Miranda IM with its own engine.
ICQ7 is an attempt to create a full-featured ICQ client for Nokia 7710 smartphone. Unlike many Symbian 7.0s ICQ clients, this one does receive non-english messages from Miranda IM correctly. Now available in Russian.
Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system.
The STRICQ v2 Project. The Amiga ICQ clone using v8 of the ICQ protocol along with the Amiga MUI GUI system.
An opensource C++ library being developed to support the icq2000/2001 protocol. Easy for developers to use as the backbone for their clients' connection to the ICQ network - all the protocol work is abstracted away in one nice object-orientated interface
A cross-platform multi-service chat and instant messaging GUI client in C++/Qt.
Babel IM is a skinnable instant messenger, with plugins for ICQ, AIM, MSN, Yahoo & RSA crypto. All functionality is provided through the plugin interface, so Babel is highly customizeable.
The BeOS Instant Messaging Kit project aims to create a BeOS-centric, generic instant messaging servuice for workstations. The system will follow the BeOS kits/servers model, and different IM protocols will be supported through add-ons to the im_server,
BeGaimed: An Instant Messenger based on Gaim(.sf.net) with the bluetooth capabilaties based on Bemused(.sf.net). Just a messenger for your phone sitting on your sofa using your pc with bluetooth and adsl/cable(or any other internetconnection)
Lightweight, modern, flexible and well-customisable cross-platform multi-protocol instant messaging client
ICQ like client for Symbian OS 9.2
A native instant messenger for Motorola EZX phones with support for both ICQ and JABBER protocols.