Best Open Source chatbot Libraries
A curated list of the most popular GitHub repositories tagged with chatbot. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1rasbt/LLMs-from-scratch
Implement a ChatGPT-like LLM in PyTorch from scratch, step by step
#2xtekky/gpt4free
The official gpt4free repository | various collection of powerful language models | opus 4.6 gpt 5.3 kimi 2.5 deepseek v3.2 gemini 3
#3pathwaycom/llm-app
Ready-to-run cloud templates for RAG, AI pipelines, and enterprise search with live data. 🐳Docker-friendly.⚡Always in sync with Sharepoint, Google Drive, S3, Kafka, PostgreSQL, real-time data APIs, and more.
#4FlowiseAI/Flowise
Build AI Agents, Visually
#5QuivrHQ/quivr
Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.
#6chatboxai/chatbox
Powerful AI Client
#7chatchat-space/Langchain-Chatchat
Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain
#8agentscope-ai/QwenPaw
Your Personal AI Assistant; easy to install, deploy on your own machine or on the cloud; supports multiple chat apps with easily extensible capabilities.
#9python-telegram-bot/python-telegram-bot
We have made you a wrapper you can't refuse
#10simstudioai/sim
Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.
#11AstrBotDevs/AstrBot
Agentic IM Chatbot infrastructure that integrates lots of IM platforms, LLMs, plugins and AI feature, and can be your openclaw alternative. ✨
#12Cinnamon/kotaemon
An open-source RAG-based tool for chatting with your documents.
#1378/xiaozhi-esp32
An MCP-based chatbot | 一个基于MCP的聊天机器人
#14iOfficeAI/AionUi
Free, local, open-source 24/7 Cowork app and OpenClaw for Gemini CLI, Claude Code, Codex, OpenCode, Qwen Code, Goose CLI, Auggie, and more | 🌟 Star if you like it!
#15agentscope-ai/agentscope
Build and run agents you can see, understand and trust.
#16elizaOS/eliza
Autonomous agents for everyone
#17leon-ai/leon
🧠 Leon is your open-source personal assistant.
#18mayooear/ai-pdf-chatbot-langchain
AI PDF chatbot agent built with LangChain & LangGraph
#19ai-shifu/ChatALL
Concurrently chat with ChatGPT, Bing Chat, Bard, Alpaca, Vicuna, Claude, ChatGLM, MOSS, 讯飞星火, 文心一言 and more, discover the best answers
#20stackblitz/bolt.new
Prompt, run, edit, and deploy full-stack web applications. -- bolt.new -- Help Center: https://support.bolt.new/ -- Community Support: https://discord.com/invite/stackblitz
#21GaiZhenbiao/ChuanhuChatGPT
GUI for ChatGPT API and many LLMs. Supports agents, file-based QA, GPT finetuning and query with web search. All with a neat UI.
#22mamoe/mirai
高效率 QQ 机器人支持库
#23baptisteArno/typebot.io
💬 Typebot is a powerful chatbot builder that you can self-host.
#24sigoden/aichat
All-in-one LLM CLI tool featuring Shell Assistant, Chat-REPL, RAG, AI Tools & Agents, with access to OpenAI, Claude, Gemini, Ollama, Groq, and more.
#25BlinkDL/ChatRWKV
ChatRWKV is like ChatGPT but powered by RWKV (100% RNN) language model, and open source.
#26friuns2/BlackFriday-GPTs-Prompts
List of free GPTs that doesn't require plus subscription
#27yagop/node-telegram-bot-api
Telegram Bot API for NodeJS
#28assistant-ui/assistant-ui
Typescript/React Library for AI Chat💬🚀
#29h2oai/h2o-llmstudio
H2O LLM Studio - a framework and no-code GUI for fine-tuning LLMs. Documentation: https://docs.h2o.ai/h2o-llmstudio/
#30gptme/gptme
Your agent in your terminal, equipped with local tools: writes code, uses the terminal, browses the web. Make your own persistent autonomous agent on top!
#31HolmesGPT/holmesgpt
SRE Agent - CNCF Sandbox Project
#32FranciscoMoretti/chat-js
Production-ready AI chat. Start here and make it your own. Formerly Sparka AI
#33DasterProkio/awesome-ai-companion
Open-source AI companions, desktop pets, long-term memory & proactive chat. 人机恋开源项目大全。让你的家机能够脱离官端自主存在，拥有记忆和主动性。
#34chattermate/chattermate.chat
Open-source AI customer support platform — AI chatbot with human handoff, Shopify & Slack integrations, visual workflow builder. Self-hosted alternative to Intercom & Zendesk. Apache-2.0.
#35Rich627/whatsapp-claude-plugin
Claude Code WhatsApp channel plugin — run AI directly from WhatsApp, voice transcription, remote tool approval, access control. No API keys, no Docker, just a linked device.