• Pidgin icon

    Pidgin

    Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for protocols...

    Open Source Mac Windows Linux BSD Xfce

  • Trillian icon

    Trillian

    Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped as...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry iPad

  • Miranda IM icon

    Miranda IM

    Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols. Designed from the ground-up to be resource efficient while still providing a rich feature set, Miranda includes support for AIM, Jabber, ICQ...

    Open Source Windows

  • Jitsi icon

    Jitsi

    Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP...

    Open Source Mac Windows Linux Web / Cloud Android BSD

  • Psi icon

    Psi

    Psi is an instant messaging application for Windows, Linux, and Mac OS X that connects to the free, open Jabber IM network (also known as XMPP). Localized versions of Psi are available in almost twenty different languages. Built-in...

    Open Source Mac Windows Linux BSD

  • Emesene icon

    Emesene Discontinued

    emesene is an instant messenger capable of connecting to various networks and utilizing different graphical toolkits. Currently msn and jabber are supported through papyon and xmppy, which allows emesene to connect to various IM services...

    Open Source Mac Windows Linux BSD

  • Instantbird icon

    Instantbird Discontinued

    Instantbird is an instant messaging client based on Mozilla XULRunner and the open source library libpurple created by the software developers of Pidgin . Over 250 add-ons allow user customization of...

    Open Source Mac Windows Linux

  • Gajim

    The goal of Gajim is to provide a full featured and easy to use Jabber client. Gajim works nicely with GNOME, but does not require it to run. It is released under the GNU General Public License.

    Open Source Windows Linux BSD Xfce

  • Miranda NG icon

    Miranda NG

    Miranda New Generation is a successor of a popular multi-protocol instant messaging client for Windows - Miranda IM . Very light on system resources and extremely fast. Protocol Support: * AIM AOL Instant Messenger * Em-LAN *...

    Open Source Windows

  • Smuxi icon

    Smuxi

    Smuxi is an irssi-inspired, flexible, user-friendly and cross-platform IRC client for sophisticated users, targeting the GNOME desktop. Smuxi is based on the client-server model: The core application (engine) can be placed onto a server...

    Open Source Mac Windows Linux

  • qutIM icon

    qutIM Discontinued

    qutIM - free open-source multiprotocol ( ICQ, Jabber/GTalk/Ya.Online/LiveJournal.com, Mail.Ru, IRC ) instant messenger for Windows, Linux, MacOS X, OS/2, Symbian, Maemo/MeeGo, Solaris and *BSD.

    Open Source Mac Windows Linux S60 BSD Haiku

  • Spark icon

    Spark

    Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security. It also offers a great end-user experience with features...

    Open Source Mac Windows Linux Self-Hosted

  • Psi+ icon

    Psi+

    Psi+ is a development branch of Psi IM XMPP/Jabber client. Psi is a cross-platform powerful XMPP/Jabber client (Qt, C++) designed for the Jabber power users.

    Open Source Mac Windows Linux BSD

  • QIP Infium icon

    QIP Infium Warning

    QIP Infium is a multiprotocol instant messaging client. It supports ICQ (OSCAR), Jabber (XMPP), Mail.ru Agnet (MRA), IRC, XIMSS, SIP, Twitter, Facebook and other.

    Free Windows iPhone S60

  • Kadu icon

    Kadu

    Kadu is an open source Jabber/XMPP and Gadu-Gadu instant messenger client for Linux, *BSD, Mac and Windows.

    Open Source Mac Windows Linux BSD

  • Coccinella icon

    Coccinella

    Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.

    Open Source Mac Windows Linux BSD

  • Openfire icon

    Openfire

    Openfire (formerly Wildfire) is a cross-platform instant messaging (IM) and groupchat server. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to setup and...

    Open Source Mac Windows Linux

  • ejabberd icon

    ejabberd

    ejabberd is an open source Jabber/XMPP server designed from the ground up to be the building bricks of highly critical messaging systems. Designed to be massively scalable, it is used to power web scale deployments across many software...

    Open Source Mac Windows Linux

  • Prosody icon

    Prosody

    Prosody is a modern flexible communications server for Jabber/XMPP written in Lua. It aims to be easy to set up and configure, and light on resources. For developers it aims to be easy to extend and give a flexible system on which to...

    Open Source Mac Windows Linux Web / Cloud BSD

  • Ayttm icon

    Ayttm

    Ayttm is an instant messaging (aka chat) client that provides all-in-one chat functionality for several major instant messaging services from one simple program. Ayttm "Contacts" allow you to refer to several accounts of the same...

    Open Source Windows Linux BSD

  • Pandion icon

    Pandion

    Pandion is an open source instant messaging client for XMPP networks.

    Open Source Windows

  • BitlBee icon

    BitlBee

    BitlBee brings IM (instant messaging) to IRC clients. It's a great solution for people who have an IRC client running all the time and don't want to run an additional MSN/AIM/whatever client. BitlBee currently supports the...

    Open Source Mac Windows Linux BSD

  • AQQ Instant Messanger icon

    AQQ Instant Messanger

    AQQ is a Polish (but available in English) multiprotocol instant messenger with support of: AQQ, Jabber, Gadu-Gadu, Tlen and ICQ. It has many great features like: one tabbed message window for all conversations; quick search for contacts;...

    Free Windows

  • GoldBug icon

    GoldBug

    GoldBug is a secure Instant Messenger. You can be sure with using GoldBug (GB), that no third party can look into your chat communication. Private user-to-user communication remains private. GoldBug therefore uses strong multi-encryption...

    Open Source Mac Windows Linux BSD

  • Vacuum-IM icon

    Vacuum-IM

    Crossplatform Jabber client. The core program is just a plugin loader - all functionality is made available via plugins. This enforces modularity and ensures well defined component interaction via interfaces.

    Open Source Mac Windows Linux Haiku