Browse free open source Chat software and projects for Windows and ChromeOS 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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  • 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: 174 This Week
    Last Update:
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  • 2
    Supybot
    Nested commands, easy configuration, and an incredibly flexible and easy-to-use plugin system distinguish Supybot from other IRC bots. There simply isn't a more flexible or easier to use IRC bot!
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    Downloads: 2 This Week
    Last Update:
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  • 3
    Internet Discussion Boards is a message board system by Game Maker 2k. Its very easy to set up. Your web host needs PHP and CUBRID / MySQL / MariaDB / PostgreSQL / SQLite. Internet Discussion Boards is Open Source so you can make changes to it.
    Downloads: 3 This Week
    Last Update:
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  • 4
    JMSN is a pure Java Microsoft MSN Messenger clone, including Instant messaging, File Send/Receive, msnlib (for developers), and additional chat log etc. JMSN has many interesting features that MSN doesn't have.
    Downloads: 1 This Week
    Last Update:
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  • 5
    lsn

    lsn

    Free social network.

    Free social network written on C++. - Messaging - Catalogue - Trading.
    Downloads: 4 This Week
    Last Update:
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  • 6
    PASchatti
    Highly specialized webchat frontend/client for Suomi24 Chat. Finnish only.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    A collection of practical and useful PHP scripts which impose minimum requirements to hosting systems. Currently it contains a gallery, chat, blog and snippets collection scripts.
    Downloads: 1 This Week
    Last Update:
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  • 8
    YTalk Cursor Freedom (YCF) is a small C# app that you can run inside of YTalk which provides an extended feature set for YTalk such as the ability to use the arrow keys.
    Downloads: 1 This Week
    Last Update:
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  • 9
    This is a set of .NET class libraries, designed to use various Internet protocols in a easy-to-use OO matter. So far it contains a POP3 and an IRC (Internet Relay Chat) library.
    Downloads: 0 This Week
    Last Update:
    See Project
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  • 10
    ADV Seeker

    ADV Seeker

    ADV Seeker detects inadmissible advertisement in selected IRC network

    ADV Seeker detects inadmissible advertisement in selected IRC network. At present day You can use it with eggdrops/windrops and/or mirc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Andranalizer is a tool to display and analize the archived messages of Yahoo Messenger. Andranalizer also has some search functionality and statistics.
    Downloads: 0 This Week
    Last Update:
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  • 12
    AndyChat is a console chat program written in Perl and Curses which supports chatting on multiple servers on multiple protocols in multiple windows.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Ariesbot, is an ircbot, which will be able of doing basic bot functions such as op/deop/kick/ban/moderate. Plus being able to Wu-Ftpd scans, cgi/php scans port scans, subnet scans and scan for vuln version of apache to nosejob.c.
    Downloads: 0 This Week
    Last Update:
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  • 14
    Bash on Rails is quote database engine (like http://bash.org/or http://bash.org.ru/) written with Ruby on Rails framework. Supports multiple moderators with different privileges, editing quotes, sorting quotes by rating, quote searching and RSS feed.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    A collection of small utilities to use Battle.net chat without requiring StarCraft*/BroodWar*/Diablo* to be installed.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Caffeine Duck IRCd
    CaffeineDuck IRCd is a project to simplify and extend the IRC protocol, while at the same time producing a new IRCd that will be fairly simple to use both for administrators and end users.
    Downloads: 0 This Week
    Last Update:
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  • 17
    CherryPop is a Java based multi-user server with a GUI client.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Chipz.IRC is an easy to use IRC library with SSL support. It's written in C# for the .NET framework.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    The DI tracker bot provides stream, event, and forums information for Digitally Imported (http://di.fm/) to IRC users.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Eclipse Instant Messenger Plugin(eimp) is a Eclipse(http://www.eclipse.org) plugin, which integrate some popular im protocols(MSN,YAHOO,ICQ,AIM,etc.).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Collection of TCL scripts for the eggdrop IRC bot. Scripts include: o rosary - The eggdrop leads the Rosary in your chat channel.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Eicq is an ICQ client that is written Emacs Lisp. Currently it isn't working, we are in the process of implementing version 8 of the ICQ protocol. Eicq requires XEmacs 21.4 or newer.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    A fast, sleak, and extensible IRC bot, written in Ruby. Using plugins to provide all functionality wanted.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    FEATHERCHAT'S PROJECT PAGE HAS MOVED: http://code.google.com/p/featherchat
    Downloads: 0 This Week
    Last Update:
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  • 25
    Downloads: 0 This Week
    Last Update:
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