Open Source Chat Software - Page 5
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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. -
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Dolphin Pro - Social Network Platform
Open-source social network CMS and mobile apps.
Dolphin Pro is a full-featured integrated Social CMS. Dolphin includes media server, video converter, media sharing modules, social profiles, chat, messenger, timeline, events, groups, store, blogs, forums and more. -
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BitchX is an IRC client based on ircII/EPIC4. It includes many features that are usually relegated to scripts such as CDCC and flood protection -- you can just start it and go. Development was on hiatus for a while but is now resuming.
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libircclient is a small but powerful library, which implements client-server IRC protocol. It has all features needed to create your own IRC client or bot, including multi-threading support, sync and async interfaces, CTCP/DCC support, colors, SSL connections and so on.
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"Nearly Intelligent Computer Operated Language Examiner" - NICOLE is a theory or experiment that if a computer is given enough combinations of how words, phrases and sentences are related to one another, it could talk back to you.
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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.
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Berty
Berty is a secure peer-to-peer messaging app
Berty is an open, secure, offline-first, peer-to-peer and zero trust messaging app. Berty is an encrypted and offline peer-to-peer messenger with no central server. Connect with or without an internet connection, message for free, and avoid surveillance and censorship. Berty is fresh off the development line and hasn’t been audited yet. Please keep this in mind when exchanging data. In some countries, even a lol or a like can get you sent to jail. Berty is end-to-end encrypted - not even our developers could access your data, let alone corporations or governments. Just like blockchain technologies, Berty doesn’t pass your data through central servers - the place where internet service providers, hackers, and governments can intercept your data. Instead, Berty’s network is distributed, based on P2P direct messaging. Berty couldn’t care less about who you are. You don’t need to provide your real name, an email, or a date of birth. You don’t even need a SIM card! -
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DISCORD.js-selfbot
An unofficial discord.js fork for creating selfbots
DISCORD.js-selfbot is an archived Node.js library based on discord.js that targets Discord user-account API behavior instead of normal bot accounts. It exposes structures for messages, guilds, interactions, status, activity, voice, video, and other user-specific Discord features. The project was built around Discord API v9 and backported selected functionality from later discord.js versions. It includes documentation, examples, tests, and npm distribution history, but the repository is no longer actively maintained. Because automating Discord user accounts violates Discord’s Terms of Service and can lead to account penalties, this project should be treated as a risky proof-of-concept or research library. It is not appropriate for compliant production bot development. -
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DiscordPHP
An API to interact with the popular messaging app Discord
DiscordPHP is a PHP library for building Discord bots and integrations with Discord’s REST, gateway, and voice APIs. It is built around ReactPHP components, so developers need to understand event loops, promises, and long-running CLI processes. The library is not designed to run like a traditional web request inside Apache or Nginx. Instead, it runs as a persistent PHP process that connects to Discord, listens for events, and reacts through handlers. It supports Composer installation, intents, examples, documentation, community tutorials, and framework-agnostic bot development. DiscordPHP is best suited for PHP developers who want to build real-time Discord applications without switching to JavaScript, Python, or Go. -
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Easy SMS
A multi-channel SMS sending wheel
Easy SMS is a PHP package for sending SMS messages through multiple service providers using one consistent interface. It helps developers avoid writing separate integrations for every SMS gateway their application may need. The package uses configurable gateways, strategies, messages, and phone number handling to make SMS delivery easier to manage. It is especially useful in applications that need verification codes, alerts, notifications, transactional messages, or fallback delivery across providers. The project is installed through Composer and is part of Overtrue’s broader PHP ecosystem. It is aimed at developers who want a practical abstraction layer for multi-channel SMS delivery in PHP applications. -
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Element
A glossy Matrix collaboration client for the web
Element, formerly known as Vector and Riot, is a glossy Matrix collaboration client built using the Matrix React SDK. It offers teams, friends and organizations a secure, all in one chat app that is protected from pesky ads and data mining methods. All communications are done through the open global Matrix network, secured with end-to-end encryption. Element gives you all the services you need from a chat app: group chat, video calls, file sharing and more-- all done securely and in total privacy. Element has three different tiers of support for different environments, the most supported being the latest versions of Chrome, Firefox, and Safari on desktop OSes. -
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Laravel Chat
A Laravel chat package. You can use this package to create a chat app
Create a Chat application for your multiple Models. -
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MuseBot
Supports Telegram, Discord, Slack, Lark, compatible with LLMs
MuseBot is a multi-platform AI chatbot designed to connect popular messaging apps with large language model APIs. It supports Telegram, Discord, Slack, Lark, DingTalk, WeCom, QQ, WeChat, and a Web API for custom integrations. The bot can generate AI responses, stream output, understand images, process voice input, and use function-calling workflows. It supports model providers such as OpenAI, Gemini, DeepSeek, OpenRouter, Doubao, Qwen, and other compatible services. MuseBot also includes RAG support, metrics, cron triggers, registration modules, and an admin platform for management. It is useful for users who want one AI assistant architecture across private chats, group chats, and business communication tools. -
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OpenCord
An open-source Material You implementation of the Discord Android app
OpenCord is an archived open-source Android client project that aimed to recreate Discord with a Material You interface. It was built in Kotlin and focused on bringing a more native Android design language to a Discord-style mobile experience. The project was still a work in progress and prioritized implementing stock client behavior before adding custom features. Its README clearly warns that the project is discontinued and that downloading the release APK may create Discord Terms of Service risk. OpenCord is best understood as a historical or experimental client implementation rather than a recommended daily-use app. It remains useful for developers studying Android, Jetpack Compose, Discord-like interfaces, and unofficial client architecture. -
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Pesterchum-Discord
A Discord client mimicking the Pesterchum chat client from Homestuck
A Discord client mimicking the Pesterchum chat client from Homestuck, Uses a lot of code from my Pesterchum Client. A Discord client mimicking the Pesterchum chat client from Homestuck, for the few people who are still interested in that. If you have any questions either contact me the GitHub or add me at Henry#8808 on Discord. This app is not an all-in-one client! It is meant to enhance RP and anything else you wish to do with it, however, it is recommended you still use regular Discord for technical functions. The release download is distributed as a .zip file. Unzip the file and inside will be a file called pesterchum.exe If there is an update, updater.exe will launch in a console. It doesn't install anywhere, its fairly portable. It is not yet for OSX/Linux, contact me if anyone is interested in supporting it. -
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QKSMS
A beautiful SMS messenger for Android
Fall in love with texting all over again with QKSMS! QKSMS is a beautiful, simple and customizable open source replacement to the stock messaging app on Android. It's got a clean, clutter-free intuitive design that lets you focus on what matters, plus millions of colors to choose from to make the theme of the entire app truly your own. QKSMS has some powerful features, including photo sharing, group chat, conversation blocking, message backup and restore and more. It's got everything you need from a text messaging app, plus all the fun features that make for a great text messaging experience. Simply put, QKSMS makes texting magical again, just the way it should be! -
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Replugged
A lightweight Discord client mod focused on simplicity and performance
Replugged is a lightweight Discord client mod focused on customization, simplicity, and performance. It lets users extend the Discord client with plugins and themes built for the Replugged ecosystem. The project includes developer resources, API documentation, contribution guidance, and a dedicated guide for creating extensions. It is written mostly in TypeScript and is designed around a modern plugin and theme format rather than older compatibility layers. Replugged emphasizes API-compliant and ethical plugin behavior, but it also clearly notes that client mods conflict with Discord’s Terms of Service. It is best suited for users and developers who understand the risks of client modification and want a more flexible Discord experience. -
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SimpleXMQ
A reference implementation of the SimpleX Messaging Protocol
A reference implementation of the SimpleX Messaging Protocol for simplex queues over public networks. SimpleXMQ is a message broker for managing message queues and sending messages over a public network. It consists of an SMP server, SMP client library, and SMP agent that implements SMP protocol for client-server communication and SMP agent protocol to manage duplex connections via simplex queues on multiple SMP servers. SMP protocol is inspired by Redis serialization protocol, but it is much simpler - it currently has only 10 client commands and 8 server responses. -
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Stoat
The software powering Stoat
Stoat is an open-source communication platform and ecosystem designed to provide a modern alternative to traditional chat applications with support for self-hosting and extensibility. The project includes multiple components such as backend services, client applications, and supporting infrastructure, forming a complete messaging system that can be deployed across different environments. The repository for stoat.chat specifically serves as a central web hub that provides access to downloads, documentation, and information about the platform. StoatChat is built with modern technologies such as Rust and TypeScript and integrates with systems like Revolt to deliver real-time messaging capabilities. The platform supports multiple clients including web, desktop, and mobile applications, allowing users to interact across devices seamlessly. It also emphasizes developer flexibility by offering APIs and SDKs that enable integration with custom tools and services. -
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AirDC++
An ultimate client for Direct Connect network
AirDC++ is light and easy to use client for Direct Connect network, allowing users to share files with friends and other people on internet or local network. It has more features compared to for example DC++ and StrongDC++, in which it is based on. -
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Adium
A multi-protocol instant messaging app for Mac OS X
Adium is an Open Source, multi-protocol instant messaging application for Mac OS X. Adium supports AIM, ICQ, Jabber, MSN, Yahoo!, Google Talk, Bonjour, Gadu-Gadu, Novell Groupwise, SIP/SIMPLE (Text), and Lotus Sametime. Additionally, it supports all of these applications at once so, even if you have multiple IM accounts, you don't have to log into each account separately. -
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AChat enables you to chat on your local network (LAN). But you can also share entire directories or send specific files, show images to other users and send messages even to users who are currently offline. Everything with full Unicode support.
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FlylinkDC++
DC ++ open source client
This is a project aimed at producing a file-sharing and chatting client using the ADC protocol. It also supports connecting to the Direct Connect network and downloading torrent files. -
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RetroShare
[WARNING] Project has moved to http://github.com/Retroshare/Retroshare
[IMPORTANT] Retroshare is now distributed on Github. Please go to http://retroshare.net to find the latest releases and sources. RetroShare is a cross-platform, secured and decentralized communication system. It lets you to securely chat, share photos, videos, and more with family and friends, using OpenPGP to authenticate peers and OpenSSL to encrypt all communication. -
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Gameranger Client connects to the macintosh online gaming service, Gameranger. Allows you to chat with other users and find games.
