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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  • 1
    Buzz

    Buzz

    A hive mind communication platform

    Buzz is a self-hostable collaboration workspace where human teammates and AI agents work together in the same channels. It records messages, reactions, workflow steps, approvals, and Git activity as cryptographically signed Nostr events in a shared log. The platform includes channels, threads, direct messages, canvases, media sharing, full-text search, and a tamper-evident audit trail. Agents receive their own identities and memberships, allowing them to answer questions, review patches, manage workspaces, and run tools without impersonating users. YAML workflows can respond to messages, reactions, schedules, and webhooks while preserving execution traces. Buzz provides a Tauri desktop client, browser access, a JSON-oriented CLI, MCP support, and ACP integrations for popular coding agents. Teams can run their own relay and keep the workspace, history, automation, and repositories under their control.
    Downloads: 61 This Week
    Last Update:
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  • 2
    JDA

    JDA

    Java wrapper for the popular chat & VOIP service

    JDA strives to provide a clean and full wrapping of the Discord REST api and its Websocket-Events for Java. This library is a helpful tool that provides the functionality to create a discord bot in java. Discord is currently prohibiting the creation and usage of automated client accounts (AccountType.CLIENT). We have officially dropped support for client login as of version 4.2.0! Note that JDA is not a good tool to build a custom discord client as it loads all servers/guilds on startup, unlike a client which does this via lazy loading instead. If you need a bot, use a bot account from the Application Dashboard. Creating the JDA Object is done via the JDABuilder class. After setting the token and other options via setters, the JDA Object is then created by calling the build() method. When build() returns, JDA might not have finished starting up. However, you can use await ready() on the JDA object to ensure that the entire cache is loaded before proceeding.
    Downloads: 9 This Week
    Last Update:
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  • 3
    Hubot

    Hubot

    A customizable life embetterment robot

    Hubot is a framework to build a custom chat bot, first built by GitHub, Inc. to automate their company chat room. Hubot gives you a very nice base for building your very own robot friend. Hubot comes with a small group of core scripts, including things like posting images, translating languages, and integrating with Google Maps. It's extendable with many other scripts, which make Hubot all the more personalized to fit your organization's needs and culture. Hubot can work on many different chat services, including third-party adapters Gitter, IRC, Slack and more. Build your own personalized chat bot with Hubot!
    Downloads: 5 This Week
    Last Update:
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  • 4
    Rasa

    Rasa

    Open source machine learning framework to automate text conversations

    Rasa is an open source machine learning framework to automate text-and voice-based conversations. With Rasa, you can build contextual assistants on Facebook Messenger, Slack, Google Hangouts, Webex Teams, Microsoft Bot Framework, Rocket.Chat, Mattermost, Telegram, and Twilio or on your own custom conversational channels. Rasa helps you build contextual assistants capable of having layered conversations with lots of back-and-forths. In order for a human to have a meaningful exchange with a contextual assistant, the assistant needs to be able to use context to build on things that were previously discussed. Rasa enables you to build assistants that can do this in a scalable way. Rasa uses Poetry for packaging and dependency management. If you want to build it from the source, you have to install Poetry first. By default, Poetry will try to use the currently activated Python version to create the virtual environment for the current project automatically.
    Downloads: 3 This Week
    Last Update:
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    tmi.js

    tmi.js

    Javascript library for the Twitch Messaging Interface

    Connect to and interact with Twitch chat (IRC) from Node.js or a browser. Control the delay in milliseconds between JOIN requests when using the channels array option. Minimum of 300 milliseconds. If the identity has special permission from Twitch for a higher join rate then you should implement your own calls to the client.join method. Disable receiving JOIN/PART events for other users. Good for decreasing network traffic when joining lots of channels or you don't care about this data. After a threshold per channel Twitch stops sending this data so it may not be necessary for all cases. Channels to automatically join upon connecting. The rate of joins is controlled by the options.joinInterval option. Automatically reconnect the client if it gets disconnected for any reason. Sometimes Twitch will request the client to reconnect and tmi.js will disconnect and reconnect even if this option is set to false.
    Downloads: 3 This Week
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  • 6
    AI Chatbot Framework

    AI Chatbot Framework

    Python chatbot framework with Natural Language Understanding

    Building a chatbot can sound daunting, but it’s totally doable. AI Chatbot Framework is an AI powered conversational dialog interface built in Python. With this tool, it’s easy to create Natural Language conversational scenarios with no coding efforts whatsoever. The smooth UI makes it effortless to create and train conversations to the bot and it continuously gets smarter as it learns from conversations it has with people. AI Chatbot Framework can live on any channel of your choice (such as Messenger, Slack etc.) by integrating it’s API with that platform. You don’t need to be an expert at artificial intelligence to create an awesome chatbot that has AI capabilities. With this boilerplate project you can create an AI-powered chatting machine in no time.
    Downloads: 2 This Week
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  • 7
    Astro Boy Chat Room

    Astro Boy Chat Room

    Atom chat room nestjs+vue full stack chat room

    In my spare time, I wanted to make a chat room to consolidate front-end skills, so I started the development journey of Astro chat room on June 24, 2020. The project is developed in full typescript, which is to lay the foundation for future functional iterations. Of course, I also like typescript very much. At present, the chat room has a complete chat function. More cool features will be developed in the future! Interested friends can fork to develop by themselves, you can change it at will! I have time to upgrade new features! A superset of JavaScript, its biggest advantage is to provide a type system and improve the readability and maintainability of the code. Real-time communication, websocket third-party library. Efficient and scalable Node.js server-side application framework, written based on TypeScript and combined with related concepts of OOP1, FP2, and FRP3.
    Downloads: 2 This Week
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  • 8
    Botkit

    Botkit

    Tool for building chat bots, apps and custom integrations

    An open source developer tool for building chat bots, apps and custom integrations for major messaging platforms. Part of the Microsoft Bot Framework. We love bots, and want to make them easy and fun to build! Include Botkit into your Node application and boot up a controller that will define your bot's behaviors. In this case, we're setting up a bot to use with the Bot Framework Emulator. Tell the bot to listen for users saying "hello," and use `bot.reply` to send an immediate response. Start a conversation, then queue up multiple messages to send, including a prompt sent using `convo.ask()` which allows your bot to capture user input and use it. Botkit is just one part of a bigger set of developer tools and SDKs that encompass the Microsoft Bot Framework. The Bot Framework SDK provides the base upon which Botkit is built. It is available in multiple programming languages!
    Downloads: 2 This Week
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  • 9
    Chaskiq

    Chaskiq

    Full featured live chat, support & marketing platform

    Chaskiq's plugin architecture allows for a variety of conversational experiences to take them to the next level. For example: Schedule meetings with Calendly, provide means of payment directly from the webchat, initiate video calls via Zoom, integrate your shopping carts or trigger subsequent actions via Zapier. In short, create experiences that create value for your customers. There are no limits! One of the most robust webchats that allows extending its functionalities by integrating multiple plugins which allow taking conversations to the next level. We have developed a text editor that allows us to send messages worthy of the year 2022, this means going beyond markdown format and taking messaging to the extreme. Gifs, Videos, Embeds and a long etcetera. Chaskiq is an open source platform that connects and empowers the communication of support, sales & marketing teams with their customers.
    Downloads: 2 This Week
    Last Update:
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  • 10
    DiscordGo

    DiscordGo

    (Golang) Go bindings for Discord

    DiscordGo is a Go package that provides low level bindings to the Discord chat client API. DiscordGo has nearly complete support for all of the Discord API endpoints, websocket interface, and voice interface. If you would like to help the DiscordGo package please use this link to add the official DiscordGo test bot dgo to your server. This provides indispensable help to this project. Construct a new Discord client which can be used to access the variety of Discord API functions and to set callback functions for Discord events. The DiscordGo code is fairly well documented at this point and is currently the only documentation available. Go reference (below) presents that information in a nice format. This library and the Discord API are unfinished. Because of that there may be major changes to library in the future.
    Downloads: 2 This Week
    Last Update:
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  • 11
    Laravel Telegraph

    Laravel Telegraph

    Telegraph is a Laravel package for fluently interacting with Telegram

    Telegraph is a Laravel package for fluently interacting with Telegram Bots made by def:studio.
    Downloads: 2 This Week
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  • 12
    Messaging APIs

    Messaging APIs

    Messaging APIs for multi-platform

    Messaging APIs is a mono repo that collects APIs needed for bot development. It helps you build your bots using a similar API for multiple platforms, e.g. Messenger, LINE. Learn once and make writing cross-platform bots easier. If you are looking for a framework to build your bots, Bottender may suit for your needs. It is built on top of Messaging APIs and provides some powerful features for bot building.
    Downloads: 1 This Week
    Last Update:
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  • 13
    Project Libre

    Project Libre

    An open platform for chat bots, virtual agents, live chat, and more

    Project Libre is an open platform for chat bots, virtual agents, live chat, and more. It includes web and mobile services for Java, Android, iOS, and JavaScript. Project Libre includes an API, SDK, and user interface for live chat, chatrooms, forums, chat bots, virtual agents, and other services supported by the Bot Libre and Paphus servers. The hosted servers include: BOT libre! - http://www.botlibre.com - free chat bot creation and hosting platform FORUMs libre! - http://www.forumslibre.com - free embeddable forums LIVE CHAT libre! - http://www.livechatlibre.com - free live chat and chatrooms Paphus Live Chat - http://www.paphuslivechat.com - commercial live chat, chatroom, forums, and chat bot hosting service Also hosted on GitHub, https://github.com/paphus/Project-Libre
    Downloads: 26 This Week
    Last Update:
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  • 14

    AIMLBot (Program#)

    NOT UNDER ACTIVE DEVELOPMENT (sorry)

    THIS LIBRARY IS NOT UNDER ACTIVE DEVELOPMENT (sorry). AIMLBot (Program#) is a small, fast, standards-compliant yet easily customizable .NET dll implementation of an AIML (Artificial Intelligence Markup Language) based chatter bot. AIMLBot has been tested on both Microsoft's runtime environment and Mono.
    Downloads: 2 This Week
    Last Update:
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  • 15
    ALICE utilizes AIML (Artificial Intelligence Markup Language) to form responses to your questions and inputs. Unlike other commercial chat robot software costing thousands of dollars, ALICE is freely available under the terms of the GNU Public License
    Downloads: 3 This Week
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  • 16

    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: 4 This Week
    Last Update:
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  • 17
    Telegram Bot for Windows

    Telegram Bot for Windows

    Telegram Bot Windows Application

    This is a funcional application for Windows for your Telegram Bot. To create your own bot you must register new bot by BotFather bot in Telegram. BotFather will give you unique Autch code that will be used in this application.
    Downloads: 2 This Week
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  • 18
    Open Pandora's Box

    Open Pandora's Box

    Pandora is an artificial intelligent web based bot

    Pandora is an artificial intelligent web based bot written in Java. Pandora is a component based AI architecture including, database memory, XML, voice, voice rec, chat, IRC, HTTP, Wiktionary, Freebase, consciousness, language, GUI, applet, web, jsp, Android
    Downloads: 1 This Week
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  • 19

    ANGie

    Alice Next Generation (internet entity)

    An AIML based chat bot building on the original Alice AIML 1.0.1 set produced by Dr. Wallace and the ALICE AI Foundation and the PyAIML code base written by Cort Stratton, the ANGie project incorporates additional AIML sets, adds its own AIML to the set, adds new AIML tags and additional code to provide more dynamic responses and more logical case-based-reasoning. Reading through most AIML sets it seems like the authors' intention was to have a response to every input that a bot has ever seen. The ANGie project strives to have intelligent and sensible responses, but to allow the bot to have no response when the meaning of the input is inconclusive, when additional context would be required to properly respond, or in general for questions for which the bot is unprepared - in order to create a bot that is capable of carrying on basic conversations with a human similar to the sort of small talk that two humans might have. Requires PyAIMLng, PyGOAPng, and aimlGOAP.
    Downloads: 1 This Week
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  • 20
    Actor is a program you can have a conversation with (although perhaps not one which always makes a lot of sense). It analyzes what the user 'says' to it and generates replies based on learned vocabulary and word relationships.
    Downloads: 1 This Week
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  • 21

    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: 1 This Week
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  • 22
    Chat_Bot

    Chat_Bot

    A chat bot that talks to users on Omegle Site

    Here is a chat bot that will talk to users on Omegle Site, it uses AIML, python and requires connection to internet to work. You'll be amused to see the bot chat with other people on Omegle.
    Downloads: 1 This Week
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  • 23

    Skype Bot (Auto Talker)

    An enhanced, userfriendly, programmable chat bot for Skype

    This piece of software, enables the user to have a programable ChatBot. Where most of the tutorials circulating on the internet have their knowlegde base hard coded (obviously for demonstration purposes), here we will see that it is possible to add and edit rules to knowledge base during runtime, and the database is automaticly saved to a file on storage. Second thing that this program does is that it doesn't simply compare strings to search for answers, but it uses a different strategy to calculate resemblance between strings, and this sort of overcomes typing errors, misspelled words, or inverted phrases. In addition to the features mentioned above, it several secondary features that enhances user experience like a testing section, message delaying, greeting message, and the ability to load and backup database into files.
    Downloads: 1 This Week
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  • 24
    A chatbot framework currently implementing the ErkiTalk and irc protocol. By specifying parsers for the server's input one can easily create custom bots (if one can program in java of course ;).
    Downloads: 0 This Week
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  • 25
    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: 0 This Week
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