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
#22codexu/note-gen
A cross-platform Markdown AI note-taking software.
#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/
#30Chevey339/kelivo
A Flutter LLM Chat Client. Support Mobile & Desktop.
#31tuya/TuyaOpen
Next-gen AI+IoT framework for T2/T3/T5AI/ESP32/and more – Fast IoT and AI Agent hardware integration
#32proma-ai/Proma
Proma brings a seamless general-purpose Agent experience to your workflow. Built for 100× professionals and the proactive Agent era, it supports Claude and Pi runtimes, Feishu group chats, and any LLM provider.
#33kwaroran/Risuai
Make your own story. User-friendly software for LLM roleplaying
#34aws-samples/bedrock-chat
AWS-native chatbot using Bedrock
#35shiwenwen/hope-agent
🦭 会记忆、能持续推进目标、会动态编排多 Agent 的跨端桌面 AI 助手，也可服务化常驻 NAS / 云端 | A cross-device desktop AI agent with memory, autonomous goals, dynamic workflows, and headless deployment
#36awesome-gptX/awesome-gpt
🏆 An awe-inspiring collection of resources, encompassing a wide range of tools, documents, resources, applications, and use cases related to ChatGPT.
#37agents-flex/agents-flex
Agents-flex is A lightweight Java AI agent development framework (positioned as a counterpart to Spring AI). It supports features such as RAG, MCP, Skills, Text2SQL , LLM Wiki, Sub-agents, Web Search, TTS (synchronous and streaming), and STT.
#38wecode-ai/Wegent
An open-source AI-native operating system to define, organize, and run intelligent agent teams
#39ChatbotXIO/ChatbotX
The open-source ManyChat alternative, built for AI 🤖
#40DasterProkio/awesome-ai-companion
A curated list of open-source projects for building long-term AI companion relationships: frontends, backends, memory systems, hardware carriers, and world integrations.
#41llm-ring/lmring
Open-source, self-hostable LLM arena with model compare, voting, and leaderboards
#42AIEPhoenix/ai-react-markdown
A React component library for rendering AI-generated markdown — LLM streaming, LaTeX math, Mermaid diagrams, GFM, syntax highlighting, CJK-friendly typography, and cross-chunk reference coordination.
#43zhinjs/zhin
现代 TypeScript AI Agent 运行时 —— 多通道 Endpoint 接入、Harness 安全编排、插件热重载