Browse free open source ICQ software and projects below. Use the toggles on the left to filter open source ICQ software by OS, license, language, programming language, and project status.

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  • 1
    Miranda IM

    Miranda IM

    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.
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    Downloads: 250 This Week
    Last Update:
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  • 2
    Miranda NG

    Miranda NG

    Miranda NG: Next Generation of Miranda IM

    Miranda NG is a successor of a popular multi-protocol instant messaging client for Windows, Miranda IM. Very light on system resources and extremely fast. Supports Em-LAN Facebook, Gadu-Gadu, ICQ / MRA, IRC Internet Relay Chat, Jabber XMPP, MinecraftDynmap, Omegle, Sametime, SkypeWeb, Steam, Tox, Twitter, and VKontakte. Linux is not a natively supported operating system, but Miranda is known to run on Linux under Wine. PluginUpdater is responsible for keeping your Miranda up-to-date. It checks for updates for all installed plugins and other components like icon sets and langpack regularly (depending on its settings) and performs updating automatically.
    Downloads: 5 This Week
    Last Update:
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  • 3
    A pidgin plugin that allows user to assign global hotkeys (e.g. Ctrl+Alt+g) for togglling buddy list and reading queued message. When "Toggle List" hotkey is enabled, it makes the buddy list hidden from your taskbar and task switcher (similar to ICQ).
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    Downloads: 15 This Week
    Last Update:
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  • 4
    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.
    Downloads: 5 This Week
    Last Update:
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  • 5
    Adium

    Adium

    A multi-protocol instant messaging app for Mac OS X

    Adium is an Open Source, multi-protocol instant messaging application for Mac OS X. Adium supports AIM, ICQ, Jabber, MSN, Yahoo!, Google Talk, Bonjour, Gadu-Gadu, Novell Groupwise, SIP/SIMPLE (Text), and Lotus Sametime. Additionally, it supports all of these applications at once so, even if you have multiple IM accounts, you don't have to log into each account separately.
    Downloads: 3 This Week
    Last Update:
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  • 6
    YSM is a simple ICQ client based on the v7/v8 icq protocol version. Free of external libraries requirements, written in the C Language.
    Downloads: 11 This Week
    Last Update:
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  • 7
    Bot Sentry is a Pidgin (libpurple) plugin to prevent Instant Message (IM) spam. It allows you to ignore IMs unless the sender is in your Buddy List, the sender is in your Allow List, or the sender correctly answers a question you have predefined.
    Downloads: 2 This Week
    Last Update:
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  • 8
    There are many people, who search server that support several protos and can work as corporate internet connection-independent ICQ gate.
    Downloads: 5 This Week
    Last Update:
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  • 9
    Csicq is a client-server application that will enable connecting to the icq network using a Java applet without, violating the applet's security restrictions. The server side uses icqlib to maintain connection with the icq network.
    Downloads: 2 This Week
    Last Update:
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  • 10
    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.
    Downloads: 2 This Week
    Last Update:
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  • 11
    Downloads: 2 This Week
    Last Update:
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  • 12
    ICQMail is ICQ->Email gateway daemon
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    Downloads: 3 This Week
    Last Update:
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  • 13
    Simple messaging client and server (currently in TCL/TK and GTK+).
    Downloads: 3 This Week
    Last Update:
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  • 14
    Delphi ICQ Library which include TICQClient and TICQDb components. Implements ICQ v8 chat protocol, message history & contact list import from ICQ99b-2003a, Miranda-ICQ. Requires Delphi 5+.
    Downloads: 2 This Week
    Last Update:
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  • 15
    icqlib is the most feature complete, open source, library implementation of Mirabilis' ICQ protocol available on the Internet. icqlib currently supports approximately 90% of the ICQ UDP v5 protocol and 80% of the ICQ TCP v2 protocol.
    Downloads: 2 This Week
    Last Update:
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  • 16
    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.
    Downloads: 1 This Week
    Last Update:
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  • 17
    ICQ7
    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.
    Downloads: 1 This Week
    Last Update:
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  • 18
    Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system.
    Downloads: 1 This Week
    Last Update:
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  • 19
    Dnipro IM - new ICQ client. Writting on Delphi. Very easy, but I want to make The Really Good IM. So, connecting to me, connecting to Dnipro!
    Downloads: 1 This Week
    Last Update:
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  • 20
    Instant Messenger gui made with nice Fishs. Written in python. (now only Gtk, may be later we use Qt and others). Main objetives are: be nice, fast, usable, portable, and sopport different free messengers systems/backends
    Downloads: 1 This Week
    Last Update:
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  • 21
    JIT is ICQ transport for Jabber instant-messagning systems. JIT works in threaded environment and can work on multi-processor platforms. JIT uses libicq2000 and supports users search, sms messages, vcards, web presence ...
    Downloads: 1 This Week
    Last Update:
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  • 22
    Jarl is a Perl/Tk Client. It strives to provide full functionality with every aspect of the Jabber IM system. It currently supoprts messaging, chat, groupchat, ICQ, AIM, and IRC support.
    Downloads: 1 This Week
    Last Update:
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  • 23
    MSN ProxIRC is an IRC proxy (server) written in C++ which makes use of libMSN and OpenSSL. Whatever IRC server you are proxying, it shows virtual rooms to chat directly with your MSN contacts. Thread-safe and blazing fast.
    Downloads: 1 This Week
    Last Update:
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  • 24
    ICQ, MSN, IRC pure Java reusable plugin library with asynchronous operations
    Downloads: 1 This Week
    Last Update:
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  • 25
    Multiprotocol plugin-based instant messenger for X11 (optionaly support KDE), Windows and MaxOS X.
    Downloads: 1 This Week
    Last Update:
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