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.
    4.0 out of 5 stars 20 Reviews
    Downloads: 126 This Week
    Last Update:
    See Project
  • 2
    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.
    5.0 out of 5 stars 18 Reviews
    Downloads: 12 This Week
    Last Update:
    See Project
  • 3
    Jimm is an ICQ clone for mobile devices, such as celluluar phones. It is written in Java 2 Micro Edition (MIDP) and uses protocol version 8. Jimm is not affiliated with or endorsed by ICQ, Inc.
    5.0 out of 5 stars 9 Reviews
    Downloads: 7 This Week
    Last Update:
    See Project
  • 4
    A free Win32 instant messaging client. Smaller, Faster, Easier.
    5.0 out of 5 stars 3 Reviews
    Downloads: 7 This Week
    Last Update:
    See Project
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  • 5
    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: 17 This Week
    Last Update:
    See Project
  • 6
    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.
    4.3 out of 5 stars 9 Reviews
    Downloads: 4 This Week
    Last Update:
    See Project
  • 7
    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.
    5.0 out of 5 stars 4 Reviews
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8
    A miniature console based AIM client written in pure Java. It implements the TOC protocol and provides a solid framework for understanding and writing your own IM clients or bots.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 9
    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.
    5.0 out of 5 stars 1 Review
    Downloads: 4 This Week
    Last Update:
    See Project
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  • 10
    Kraken XMPP IM Gateway
    Kraken is a continuation of the Openfire IM Gateway plugin, but in a way that works for any XMPP server. It provides a way for XMPP users to log into, and communicate through, their legacy IM accounts such as AIM, ICQ, MSN, Yahoo, and friends.
    5.0 out of 5 stars 10 Reviews
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    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.
    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system.
    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
    See Project
  • 13
    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).
    5.0 out of 5 stars 1 Review
    Downloads: 2 This Week
    Last Update:
    See Project
  • 14
    ICQMail is ICQ->Email gateway daemon
    Downloads: 3 This Week
    Last Update:
    See Project
  • 15
    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: 3 This Week
    Last Update:
    See Project
  • 16
    Multiprotocol plugin-based instant messenger for X11 (optionaly support KDE), Windows and MaxOS X.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 17
    Multiprotocol plugin-based instant messenger for X11 (optionaly support KDE), Windows and MaxOS X.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    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: 3 This Week
    Last Update:
    See Project
  • 19
    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.
    5.0 out of 5 stars 1 Review
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    This plugin for Pidgin performs itself like an answering machine or, more likely, a prompter robot. It tries to find suitable answers in logs of your previous conversations and prompts its variants.
    5.0 out of 5 stars 1 Review
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    ICQ clone born to satisfy my needs. It runs as well on a 486 with win95, on a single diskette, so it's fast and small.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    The RISC OS ICQ client.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Configurable and extendable Icq client written in Tcl/Tk. Supports ICQv8 (OSCAR) protocol.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Anastacia Messenger is a multi protocol instant messenger, currently supporting ICQ, MSN and Yahoo. Written in Java, it offers a solution for people working with different operating systems, giving them the chance to use the same messenger/gui anywhere.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Downloads: 0 This Week
    Last Update:
    See Project
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