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.
    Leader badge
    Downloads: 277 This Week
    Last Update:
    See Project
  • 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: 3 This Week
    Last Update:
    See Project
  • 3
    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: 10 This Week
    Last Update:
    See Project
  • 4
    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: 7 This Week
    Last Update:
    See Project
  • Multi-Site Network and Cloud Connectivity for Businesses Icon
    Multi-Site Network and Cloud Connectivity for Businesses

    Internet connectivity without complexity

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  • 5
    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).
    Leader badge
    Downloads: 8 This Week
    Last Update:
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  • 6
    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: 3 This Week
    Last Update:
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  • 7
    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.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    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: 10 This Week
    Last Update:
    See Project
  • 9
    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: 8 This Week
    Last Update:
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  • Find out just how much your login box can do for your customer | Auth0 Icon
    Find out just how much your login box can do for your customer | Auth0

    With over 53 social login options, you can fast-track the signup and login experience for users.

    From improving customer experience through seamless sign-on to making MFA as easy as a click of a button – your login box must find the right balance between user convenience, privacy and security.
  • 10
    A free Win32 instant messaging client. Smaller, Faster, Easier.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    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: 6 This Week
    Last Update:
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  • 12
    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.
    Downloads: 1 This Week
    Last Update:
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  • 13
    ICQMail is ICQ->Email gateway daemon
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    Downloads: 5 This Week
    Last Update:
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  • 14
    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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  • 15
    PHP2ICQ is a libary which lets you easily send ICQ Messages from your own php scripts by using a direct connection to the ICQ server via the Oscar protocol (ICQ v7/v8/v9). It is completely written from scratch.
    Downloads: 1 This Week
    Last Update:
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  • 16
    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.
    Downloads: 2 This Week
    Last Update:
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  • 17
    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: 2 This Week
    Last Update:
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  • 18
    Downloads: 1 This Week
    Last Update:
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  • 19
    Configurable and extendable Icq client written in Tcl/Tk. Supports ICQv8 (OSCAR) protocol.
    Downloads: 1 This Week
    Last Update:
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  • 20
    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.
    Downloads: 1 This Week
    Last Update:
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  • 21

    Black Panda Instant Messenger

    Instant Messenger provides user with an easy way to chat with friends.

    Instant Messenger provides user with an easy way to chat with friends from many popular networks in one integrated program. Supported IM networks are ICQ, AOL, Google Talk, Facebook, MSN, IRC, Skype, Gagu-gadu a many more. It is based on great Pidgin Instant Messenger project.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    This is an Artificial Intelligent response program using Eliza designed to use with the Autoreply 1.0 or higher plugin for LICQ. Let people think they are actually talking to you.
    Downloads: 1 This Week
    Last Update:
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  • 23
    Small and portable ICQ library and client written in pure Python.
    Downloads: 1 This Week
    Last Update:
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  • 24
    Free Java Office suite on the Web.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    A "power-user" oriented Jabber client built on top of the JabberCOM COM Server. Includes most (if not all) of the Jabber functions: Basic Messaging, Group Chat, Agents, File XFers, etc.
    Downloads: 1 This Week
    Last Update:
    See Project
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