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Best Open Source chat Libraries

A curated list of the most popular GitHub repositories tagged with chat. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1RocketChat/Rocket.Chat

The Secure CommsOS™ for mission-critical operations

44,689TypeScript
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#22noise/ChatTTS

A generative speech model for daily dialogue.

38,740Python
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#3khoj-ai/khoj

Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.

32,554Python
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#4zulip/zulip

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

24,705Python
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#5SillyTavern/SillyTavern

LLM Frontend for Power Users.

23,362JavaScript
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#6LiLittleCat/awesome-free-chatgpt

🆓免费的 ChatGPT 镜像网站列表，持续更新。List of free ChatGPT mirror sites, continuously updated.

20,845Python
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#7FaridSafi/react-native-gifted-chat

💬 The most complete chat UI for React Native

14,309TypeScript
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#8LemmyNet/lemmy

🐀 A decentralised discussion platform for communities.

14,277Rust
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#9tinode/chat

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

13,093Go
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#10sjzar/chatlog

chat log tool, easily use your own chat data. 聊天记录工具，轻松使用自己的聊天数据

9,187
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#11keybase/client

Keybase Go Library, Client, Service, OS X, iOS, Android, Electron

9,171Go
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#12coaidev/coai

🚀 Next Generation AI One-Stop Internationalization Solution. 🚀 下一代 AI 一站式 B/C 端解决方案，支持 OpenAI，Midjourney，Claude，讯飞星火，Stable Diffusion，DALL·E，ChatGLM，通义千问，腾讯混元，360 智脑，百川 AI，火山方舟，新必应，Gemini，Moonshot 等模型，支持对话分享，自定义预设，云端同步，模型市场，支持弹性计费和订阅计划模式，支持图片解析，支持联网搜索，支持模型缓存，丰富美观的后台管理与仪表盘数据统计。

8,943TypeScript
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#13processone/ejabberd

Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)

6,569Erlang
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#14vynect/venom

🚀 Venom by VYNECT™ — Now part of ERA CONNECT™ Venom is now part of the ERA CONNECT™ ecosystem by VYNECT™, offering a freemium solution for ethical WhatsApp automation. Automate chats, simulate interactions, and send or receive media — with free usage limits and the option to upgrade to ERA CONNECT PRO for advanced features and stability.

6,558
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