Open source chat projects

Self-hosted team messaging with voice, video, and AI

AI second brain for research, automation, and personal agents

Open-source 24/7 Cowork app for OpenClaw, Hermes, Claude Code, Codex, OpenCode and 20+ more CLI Agent | Customize your assistants | Team them up｜Star if you lik

Organized team chat for distributed teams

Build your own federated discussion community

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

Take control over your live stream video by running it yourself. Streaming + chat out of the box.

Venom is a high-performance system developed with JavaScript to create a bot for WhatsApp, support for creating any interaction, such as customer service, media

Self-hosted team workspace with chat, docs, and databases

The UI design language and React library for Conversational UI

📲 ChatGPT Android demonstrates a Chatbot application using OpenAI's chat API on Android with Stream Chat SDK for Compose.

⌨️ Keyboard manager which works in identical way on both iOS and Android

Open-source customer communication platform

Errbot is a chatbot, a daemon that connects to your favorite chat service and bring your tools and some fun into the conversation.

Serverless team chat over Tor, no phone number needed

开源在线客服系统GO语言开发GO-FLY,免费在线客服系统/GOFLY LIVE CHAT: open source self-hosted private cloud customer support live chat software by golang

💬 Chat with anyone on any website.

Modern XMPP ("Jabber") Chat Client using GTK/Vala

Secure peer-to-peer chat that is serverless, decentralized, and ephemeral

XMPP for JavaScript

OpenVidu Platform: self-hosted real-time video and audio for your apps, built on LiveKit and mediasoup

Movim - Decentralized social platform

Create custom spaces to chat, game, and connect globally

Twake is a secure open source collaboration platform to improve organizational productivity.

A community discussion platform: Brings together the main features from StackOverflow, Slack, Discourse, Reddit, and Disqus blog comments.

A highly-customizable web-based client for Azure Bot Services.

Make your own story. User-friendly software for LLM roleplaying

Transform team email into efficient collaborative workflows

一个基于小智、xiaozhi-server的Android、IOS语音对话应用,支持实时语音交互和文字对话。现在是flutter版本，打通IOS、Android端。请同志们动动小手，点点小星星，予以鼓励。

Decentralized private messenger with chat-shared tools and games for Desktop

💬 Javascript library for the Twitch Messaging Interface. (Twitch.tv)

Lightweight, self-hosted, open-source chat server with voice, video, text, and screen sharing. Built for small groups who want privacy, simplicity, and full con

AI chat companion with versatile model support

A modern, self-hosted team chat built on Cloudflare — realtime messaging, Telegram bridge, encrypted messages & files, and WebMCP. | 基于 Cloudflare 的现代自部署团队聊天系统：

🐙 The Go backend powering OCTO — an open workplace built for humans × AI agents. REST & WebSocket APIs, Lobster (AI agent) orchestration, and WuKongIM real-tim

All-in-one native macOS AI chat application for virtually any AI provider

One-click, privacy-first exporter for Claude.ai chats — clean Markdown with artifacts and attachments, ready for Obsidian and RAG.

Messaging SDK with AI agents for web, iOS, and Android

The AI chat app that sweats the details. Every top model, real memory, living documents, and your own tools.

Community-driven platform built for transparency

Secure, scalable chat server for modern applications

No-code platform to build AI agents and automate support