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

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

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    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

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  • 1
    Mumble

    Mumble

    Low-latency, high quality voice chat for gamers

    Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming. It includes game linking, so voice from other players comes from the direction of their characters, and has echo cancellation so the sound from your loudspeakers won't be audible to other players.
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    Downloads: 145 This Week
    Last Update:
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  • 2
    GDevelop

    GDevelop

    The game engine for everyone

    GDevelop is an open-source, cross-platform game development software designed to make creating HTML5 and native games easy for everyone. Experts and novices alike can create their own games with GDevelop as it is fast and easy to learn, requiring no knowledge in a specific programming language. What makes GDevelop unique and so easy to use is its powerful and intuitive event-based system. Events are a powerful way to build up your game logic, without having to learn a programming language. GDevelop also features ready-made behaviors for your game objects, and allows you to create new behaviors through the easy to learn events. And when you're done, you can publish your game just about anywhere-- web, iOS, Android, Windows, Mac, Linux and even Facebook Messenger. Making games has never been easier or faster than with GDevelop!
    Downloads: 20 This Week
    Last Update:
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  • 3
    JAIMBot is a modular architecture for providing services through an AIM client. It contains a generic AIM library and a Bot which uses this library to provide such services as Offline Messaging, Lists, Weather, Headlines, Stock Quotes, AI chatterbot.
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    Downloads: 173 This Week
    Last Update:
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  • 4
    Accessible-Coconut

    Accessible-Coconut

    A GNU/Linux operating system accessible for visually impaired.

    Accessible-Coconut(AC) is a community driven GNU/Linux operating system which is completely accessible for persons with visual impairment. AC is derived from Ubuntu-MATE. Yes the goal is to make a free and open-source eyes free desktop environment. Forum : https://groups.google.com/forum/#!forum/accessible-coconut Telegram forum : https://telegram.me/accessible_coconut Project home : https://zendalona.com/
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    Downloads: 114 This Week
    Last Update:
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    Simple, Secure Domain Registration

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  • 5
    Chatty

    Chatty

    A Twitch Chat Client

    Chatty is a Twitch Chat Client for everyone who wants to try something different than the Webchat but doesn't want to miss out on many of the Twitch specific features.
    Downloads: 9 This Week
    Last Update:
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  • 6
    Trebuchet is a 100% TCL cross-platform GUI MUD client, designed to be powerful and extensible, yet easy to use. This client also has support for advanced features, such as SSL encryption, and allowing the server to request custom GUI dialogs.
    Downloads: 3 This Week
    Last Update:
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  • 7
    Connect Four is a two-player board game in which the objective is to be the first to get four of one's own discs in a line. This game can be played over the network. It runs on Windows, Linux and other operating systems which support the Java 5 platform.
    Downloads: 4 This Week
    Last Update:
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  • 8
    LandsDiscordBot

    LandsDiscordBot

    Adds Discord Functionality to Lands.

    This plugin adds Discord functionality to the spigot plugin Lands. It allows land owners to create a channel for their land so they can chat from Discord with their land members online at the Minecraft server. Also you can view top lands in Discord, receive land and war notifications and more to come.
    Downloads: 4 This Week
    Last Update:
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  • 9
    OpenRPG is an Internet application that allows people to play Role Playing Games and some miniature based war games in real-time over the Internet. OpenRPG helps facilitate character tracking, miniature battles, and adventure building.
    Downloads: 4 This Week
    Last Update:
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  • Enterprise and Small Business CRM Solution | Clear C2 C2CRM Icon
    Enterprise and Small Business CRM Solution | Clear C2 C2CRM

    Voted Best CRM System with Top Ranked Customer Support. CRM Management includes Sales, Marketing, Relationship Management, and Help Desk.

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  • 10
    Flash XML Socket Server using Apache MINA and JNDI for data connections.
    Downloads: 3 This Week
    Last Update:
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  • 11
    Make AJAX/PHP avatar worlds on websites. Build visualized, real multi-user communities, fora and chat rooms. See your buddies wander around. From card games to virtual RPG worlds, DutchPIPE makes it possible. The future: interconnected DutchPIPE sites.
    Downloads: 3 This Week
    Last Update:
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  • 12
    Prolix is a "binary bot" chat interface and bot for various battle.net(tm) like services such as bnetd, fsgs, and possibly battle.net itself. Prolix offers a modular design allowing one to create and use custom controls, bots and displays.
    Downloads: 3 This Week
    Last Update:
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  • 13
    A multiplayer RPG that connects as a psuedo server to an IRCD. Built in the tradition of old BBS Door games such as LORD (http://en.wikipedia.org/wiki/Legend_of_the_Red_Dragon). Forest fights add experience and gold needed to best your master (gain level
    Downloads: 1 This Week
    Last Update:
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  • 14
    Magic:The Gathering over LAN or Internet, alone or against another player (need IP of your opponent). The program is the judge : you play with the true rules. Firemox can also emulate another TBS. Written in Java, works on Mac, Windows and Linux.
    Downloads: 1 This Week
    Last Update:
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  • 15
    This project seeks to provide a web-interface to a BetaBrite LED sign capbable of sending messages to the sign and displaying them. Additional modules can also be added to have the sign display weather information and RSS.
    Downloads: 2 This Week
    Last Update:
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  • 16
    X-Core

    X-Core

    The original Xivio.com World Server Core

    Xivio.com was a commercial children's virtual world website created in 2006 by Gavin Conrad. This is the legacy World Server Java Core made available to the world to do with as it wishes.
    Downloads: 1 This Week
    Last Update:
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  • 17
    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:
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  • 18
    AOLibrary is a java-based library for writing chat bots that can be used with the game Anarchy Online. (Bots are often used to facilitate communications within an in-game organization or guild.) The library is written in Java 6.
    Downloads: 1 This Week
    Last Update:
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  • 19

    Darkbot

    The IRC's Talking Robot

    [ Please read https://sourceforge.net/p/darkbot/news/2014/01/darkbots-revitalization/ ] Darkbot is a portable IRC chat robot written in the C language that can be taught responses to user inquiries, and even have conversations with them. Darkbot was originally created by Jason Hamilton as an aid for help channels on Intenet Relay Chat.
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    Downloads: 1 This Week
    Last Update:
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  • 20
    Eggdrop based trivia-like game written in TCL.
    Downloads: 1 This Week
    Last Update:
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  • 21
    JHCore is a core database for the LambdaMOO server. JHCore is an excellent starting point from which you can build a wide range of applications. JHCore is an alternative to LambdaCore, the default core database for the LambdaMOO server.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    The classic MegaHAL conversation simulator rewritten in C++.
    Downloads: 1 This Week
    Last Update:
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  • 23
    MuddyJoe is a MUD & MOO client written in Java, utilizing Swing components, which accomodates multiple simultaneous connections in desktop-like floating windows.
    Downloads: 1 This Week
    Last Update:
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  • 24
    ele (enCore Learning Environment) is a moo- and web-based environment (server, db, GUI) designed for educational purposes. It aids and promotes online learning and community building through open standards and ease of use. http://encore-consortium.org/
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    jKEX is a online multiplayer game. The original idea is drawn from the Game \"KEX\" coded for the ROBOTRON KC 85. The game simulates a nuclear chain reaction. The aim is to take over other players atomic nucleusses by let exploding your own.
    Downloads: 1 This Week
    Last Update:
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