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

  • Try Google Cloud Risk-Free With $300 in Credit Icon
    Try Google Cloud Risk-Free With $300 in Credit

    No hidden charges. No surprise bills. Cancel anytime.

    Use your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
    Start Free
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 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.
    Leader badge
    Downloads: 165 This Week
    Last Update:
    See Project
  • 2
    GoldBug - Encrypted Communications

    GoldBug - Encrypted Communications

    Chat Messenger. E-Mail-Client. Websearch. Filetransfer.

    GoldBug is a decentralized & secure communication suite that offers an integrated e-mail client, an instant messenger & a file transfer. Also included is an URL-RSS-DB & a p2p web search. Current vers. w/ McEliece Algorithm. GoldBug has been 2013 - 2023 ten years just another Graphical User Interface of the Spot-On Encryption Suite. Main GUI features: Minimal & colorful Interface with Tabs in the East. Microsoft & Qt MinGW deprecated Win32 & for Compiling: ● https://sourceforge.net/p/goldbug/wiki/compiling As Spot-On implemented the minimal GB-concept & Nuvola Icons, GoldBug has now been fully integrated into Spot-On Win64: Just choose Tabs at East & Mini-View in Options - w/ Nuvola Icons of course! Voilá! & Many Thanks, Pro-Files can be found archived at ● current source: https://github.com/textbrowser/spot-on ● EN Manual: https://www.amazon.com/dp/3749435065 ● DE: https://compendio.github.io/goldbug-manual-de/ ● Study: https://www.amazon.com/asin/dp/3750408971
    Downloads: 27 This Week
    Last Update:
    See Project
  • 3
    Rho-Bot is a computer-generated opponent for the Sierra/Valve game Half-Life. Developed and managed by Jonathan Yaniv.
    Downloads: 11 This Week
    Last Update:
    See Project
  • 4
    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!
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 5
    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: 6 This Week
    Last Update:
    See Project
  • 6

    MudMaster 2k6

    Up to date MUD client evolved from the original MudMaster

    Next generation MudMaster GUI. Win32 GUI MUD client with triggers, aliases, scripting, and DLL plugins for extra features such as displaying chat and other in game channels in a separate window. Now supports a multi-line, variable width status bar and multiple interacting windows. User customized script buttons in the status bar let you add mouse click functionality. Has web interactivity via the /showMeViaWeb command. Mudmaster 2k6 also can be run on Linux under WINE. Questions? Ask them in our Sourceforge Forums ( https://sourceforge.net/p/mm2k6/discussion/ ) More at http://mm2k6.sourceforge.net/mm2k6/
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    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:
    See Project
  • 8
    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:
    See Project
  • 9
    An IRC client that uses Tcl for not only the scripting, but also the "glue" at the C level for how all the parts of the application fit together.
    Leader badge
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8 Monitoring Tools in One APM. Install in 5 Minutes. Icon
    8 Monitoring Tools in One APM. Install in 5 Minutes.

    Errors, performance, logs, uptime, hosts, anomalies, dashboards, and check-ins. One interface.

    AppSignal works out of the box for Ruby, Elixir, Node.js, Python, and more. 30-day free trial, no credit card required.
    Start Free
  • 10

    Auto Bot

    A modern, minimalist, extensible chat bot.

    NOTICE: We're not on SourceForge anymore. See http://autoproj.org for our new domain. Auto is modern, simple, and smart automated bot software, designed per a philosophy of minimalism, simplicity, usability, cleanliness, and easy extensibility. It has support for IRC (v3.1) with planned support for XMPP. It can be easily extended by means of its plugin API, and offers a host of features. It is known to function on any OS on which Ruby 1.9 functions (such as Linux, Mac OS X, BSD, Microsoft Windows, etc.).
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    Catchup IM is a cross platform instant messaging application built in Java. The application is targeted for Windows, Linux, and Mac OS. The project is currently in Beta release stage. For more information, visit http://catchup.sourceforge.net
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    AIBuddy is an artificially intelligent chatbot. Unlike other chatbots, which pattern-match the entered phrase against a database of hard-coded responses, AIBuddy actually remembers the conversation, and can respond in context.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    A script for the Windows IRC client XiRCON containing a complete set of tools for your everyday IRC needs along with a module and addon system for expandability (or compactibility).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    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:
    See Project
  • 15
    Smoke Crypto Chat Messenger for Android

    Smoke Crypto Chat Messenger for Android

    Smoke: Android Crypto Chat Messenger

    Smoke is an encrypting chat messenger for Android written in Java. Please read the Web site for more information: https://textbrowser.github.io/smoke/ (original, current) https://www.amazon.com/dp/3752691999/ https://smokeappope.sourceforge.io/ (old, third party archive) Smoke App OPE - Open Personal Encryption Download Android APK Installer: https://sourceforge.net/projects/smokeappope/files/ Smoke Source: https://github.com/textbrowser/smoke SmokeStack Source: https://github.com/textbrowser/smokestack (Android) https://github.com/textbrowser/spot-on (Desktop) Smoke appears to be one of the first projects with an open source mobile encrypting chat server., an decentralized and easily-configurable chat server. Smoke is known as the first mobile McEliece Messenger: https://tarnkappe.info/artikel/english/mceliece-messaging-smoke-crypto-chat-the-first-mobile-mceliece-messenger-published-as-a-stable-prototype-worldwide-279847.html
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    This ain't your daddy's crypto! We provide a set of C libs and utilities to perform cypherpunk style crypto functions, using your existing OpenPGP keys. Ring signatures; credentials; mental poker; timelines; zero knowledge proofs. Cool stuff!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    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
  • 18
    A minimal text-based communication server, which is suitable for chatting, and as a bot remote-control hub.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    AjaxChat.org, as its name indicated, is another AJAX chat application that implement many irc commands. The application is written in PHP.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    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:
    See Project
  • 21
    Line-based AIM client and BSD-licensed OSCAR library.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Boqueron is a ruby/gtk2 based jabber client aims to be simple and effective. It uses xmpp4r. It's intended for newbies in jabber and eye-candy fashioned. Join to conference in Jabber: boqueron@conf.jabberes.org.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    The B.I.M. package consists of a Web message board and an integrated instant messenger. Due to the fact that both systems are tightly integrated it is possible to send messages to the web forum from the instant messenger and vice versa.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    CLMuck is a command-line MUCK client. CLMuck is a perl script that takes input from the command line and sends it to a MUCK.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    A framework for creating java GUI application by defining GML(Graphics Markup Language) only drag and drop GUI component in CS3 software. After define GML this software can generate source code automatically comply with the framework(View,Modal,Controlle
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next
MongoDB Logo MongoDB