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

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    MongoDB Atlas runs apps anywhere

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    Yeastar: Business Phone System and Unified Communications

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  • 1
    Mattermost Desktop

    Mattermost Desktop

    Mattermost Desktop application for Windows, Mac and Linux

    Mattermost Desktop is a native desktop application for Mattermost, a workplace messaging alternative to Slack. Mattermost Desktop is developed using Electron and runs on Windows, Mac and Linux.
    Downloads: 97 This Week
    Last Update:
    See Project
  • 2
    emesene
    emesene is a platform independent instant messaging client for the Windows Live Messenger (tm) network. emesene is distributed free of charge under the GNU General Public License 2 or any later version.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 3
    Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 4
    OpenSource mud client designed to work on both windows,linux and MAC OS X. Written in Gtk+ and C with SQLLite, Python, MSP, MXP, HTML, and ZMP support. Provides plugin support, automapper functionality, triggers, aliases and macros.
    Downloads: 3 This Week
    Last Update:
    See Project
  • Accounting Software Built for Owners, and Their Clients Icon
    Accounting Software Built for Owners, and Their Clients

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  • 5
    Gabber is an easy yet powerful Jabber client for GNOME. Jabber is a powerful open source instant messaging system. Jabber allows communication with other networks, such as ICQ, AIM, MSN, Yahoo, and even IRC, but beyond that it has unique features of its
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    GnomeICU (previously GtkICQ) is an Internet-based communications program which makes use of the ICQ protocol and GNOME. DISCONTINUED: We recommend you use Empathy
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    Driver support for 3D Controller Hardware. We hope to support SDL Input, DirectInput, and other major controller API's including game consoles and embedded systems.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8
    The tools I am making are tools for everyday use, for example, you got a program that you cant close with the task manager, my tools can help you close it in a second, no long Dos commands. My tools should be real help to any started or advanced user!
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    <b>IVJ MUD (Masive Multiplayer Text Game) is a SSL-based soft:<br>-Client (GUI)<br>-Server (GUI)<br>-Applet (GUI)<br>-Protocol (SSL-based, use of localization files that store strings to reduce trafic and allow for instant i18n.<br> LOOKING FOR HELP!</b
    Downloads: 1 This Week
    Last Update:
    See Project
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  • 10
    KYIM is a KDE Instant Messenger Client compatible with Yahoo networks. KYIM is formerly known as KYahoo.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    This project has been moved away from sourceforge. See http://software.schmorp.de for the new location.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Internet Relay Chat (IRC) client for the GNOME desktop
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Avalanche-Chat is program designet for local networks, it contains file exchange module, simple ping module, IP checking, private and public chat.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    The BoardGame Tool offers an easy, XML driven interface to implementing boardgames on the computer, with automatic network play, artificial intelligence and robot possibilities. Game rules are encoded in easy-to-learn embedded Python.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    CJabby is Jabber client written in C. It is intended for GNOME users.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    A Microsoft MSN Messenger client/library in Java
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Choqok ( pronounced: tʃœˈʁʊk ) is a Free/Open Source micro-blogging client for K Desktop Environment. The name comes from an ancient Persian word, means Sparrow! Currently supports Twitter.com, Identi.ca and opendesktop.org services.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Crikey! is a Cocoa IRC Client for Mac OS X
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    E-GnomeICU is an enlightenment epplet for controlling gnomeicu.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Frech is an elegant IRC client writen in Python for the GNOME desktop. It's main focus is in presenting the user with an usable, eye-candy enabled interface, while providing seamless integration with the rest of your GNOME desktop.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    GO Social
    All in one social network browser app provides easy access to all social networks and other useful applications in one application which makes it easy to share your most recently used apps. It includes applications such as G Mail, Messenger, Whats App, Google Drive, Google Slides, Google Duo and much more. Simultaneously it lets you access all the application. Disclaimer:- All websites featured in the app have gone through a permission process.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    icqnd is a GTK-2 GUI for the popular ICQ program Licq. It's written in C++ and uses GTK/GLib. It features a clean, intuitive interface, the GTK-2 look&feel and all the licq IM backend supports (messages, chat, file transfers, history, search, ...)
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    GtkChat is clone of Vypress Chat, written in GTK2-Perl. It needs Net::Vypress::Chat library, which can be found on: https://developer.berlios.de/projects/pm-vycchat/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    HardTop

    HardTop

    Make any window Always On Top!

    Windows 11/10 taskbar area application that allows toggle of any desktop window "Always On Top" state. For example keep Messenger always on top of other windows or any other application that you'd like to always have visible.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    KMyIRC is the try to bring a good and easy, not full bloated, IRC client to KDE. Of course, there are several other IRC client like ksirc or kvirc, but they're - not userfriendly - full bloated with too much of stuff the normal irc user doesn't ne
    Downloads: 0 This Week
    Last Update:
    See Project
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