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
#8python-telegram-bot/python-telegram-bot
We have made you a wrapper you can't refuse
#9simstudioai/sim
Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.
#10AstrBotDevs/AstrBot
Agentic IM Chatbot infrastructure that integrates lots of IM platforms, LLMs, plugins and AI feature, and can be your openclaw alternative. ✨
#11Cinnamon/kotaemon
An open-source RAG-based tool for chatting with your documents.
#1278/xiaozhi-esp32
An MCP-based chatbot | 一个基于MCP的聊天机器人
#13iOfficeAI/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!
#14agentscope-ai/agentscope
Build and run agents you can see, understand and trust.
#15elizaOS/eliza
Autonomous agents for everyone
#16leon-ai/leon
🧠 Leon is your open-source personal assistant.
#17mayooear/ai-pdf-chatbot-langchain
AI PDF chatbot agent built with LangChain & LangGraph
#18ai-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
#19stackblitz/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
#20GaiZhenbiao/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.
#21mamoe/mirai
高效率 QQ 机器人支持库
#22baptisteArno/typebot.io
💬 Typebot is a powerful chatbot builder that you can self-host.
#23sigoden/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.
#24BlinkDL/ChatRWKV
ChatRWKV is like ChatGPT but powered by RWKV (100% RNN) language model, and open source.
#25friuns2/BlackFriday-GPTs-Prompts
List of free GPTs that doesn't require plus subscription
#26yagop/node-telegram-bot-api
Telegram Bot API for NodeJS
#27assistant-ui/assistant-ui
Typescript/React Library for AI Chat💬🚀
#28h2oai/h2o-llmstudio
H2O LLM Studio - a framework and no-code GUI for fine-tuning LLMs. Documentation: https://docs.h2o.ai/h2o-llmstudio/
#29gptme/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!
#30Chevey339/kelivo
A Flutter LLM Chat Client. Support Mobile & Desktop.
#31proma-ai/Proma
把最丝滑的通用 Agent 体验带进你的工作流，为 100x 专业用户而生的未来产品，正在实现 proactive Agent 阶段。基于 Claude Agent SDK 的完整开源实践，原生支持飞书群聊调用、灵活接入任意大模型供应商 —— 让顶级 Agent 能力真正跑在你每天用的地方。
#32santifer/cv-santiago
Interactive CV with AI chat integration. Built with React 19, TypeScript, Claude API. Chat with my AI avatar about my experience.
#33wecode-ai/Wegent
An open-source AI-native operating system to define, organize, and run intelligent agent teams
#34ChatbotXIO/ChatbotX
The open-source alternative to ManyChat, built for AI 🤖
#35AceDataCloud/Nexior
Consumer AI app for chat, image generation, video generation, and music creation powered by Ace Data Cloud APIs.
#36WoJiSama/skill-based-architecture
A meta-skill that produces skills. Point it at any codebase and it distills the project's rules, workflows, and hard-won lessons into a dedicated skills/<name>/ directory — a project skill that becomes the single source of truth every AI agent (Cursor, Claude Code, Codex, Windsurf, Gemini) consults before every task.
#37llm-ring/lmring
Open-source, self-hostable LLM arena with model compare, voting, and leaderboards