Open-source chatbots software
833 open-source libraries, tools and applications tagged chatbots, ranked by how closely chatbots is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
833 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| OpenClaw OpenClaw is an open‑source AI assistant that runs on your own hardware and connects to dozens of chat platforms. It provides a gateway, plu… | 80 | 392291 | active |
| Hermes Agent Hermes Agent is an open‑source autonomous AI agent that runs on the command line or as a native desktop app. It continuously learns from in… | 86 | 254714 | active |
| f/prompts.chat prompts.chat is an open‑source web application that hosts the world’s largest curated library of AI prompts. It can be self‑hosted for priv… | 77 | 172880 | active |
| Dify Dify is an open‑source platform for building production‑ready AI agents, RAG pipelines and agentic workflows with a visual no‑code studio. … | 92 | 158944 | active |
| langflow-ai/langflow Langflow is an open‑source Python‑based platform that provides a visual low‑code editor for building, testing, and deploying AI agents and … | 95 | 155852 | active |
| Open WebUI Open WebUI is a self‑hosted, web‑based interface for interacting with large language models. It supports local Ollama models, OpenAI‑compat… | 88 | 152948 | active |
| LangChain LangChain is an open-source Python framework for building LLM-powered agents and applications, providing a configurable agent harness (crea… | 95 | 148099 | stable |
| NextChat NextChat is an open‑source, cross‑platform AI chat assistant that lets users interact with many LLMs (GPT‑5, Claude, Gemini, etc.) without … | 73 | 88834 | active |
| NextChat NextChat is a lightweight, fast open-source AI chat assistant web UI supporting multiple LLM providers like OpenAI GPT-4, Claude, Gemini, D… | 73 | 88834 | active |
| Odysseus AI Workspace Odysseus is a self‑hosted AI workspace that combines chat, agents, document editing, email, notes, and calendar features with local model s… | 57 | 87526 | active |
| xtekky/gpt4free GPT4Free (g4f) is a Python-based application that aggregates multiple free LLM providers and offers a unified interface. It includes a web … | 93 | 66757 | active |
| AnythingLLM AnythingLLM is an all-in-one, local-first AI application for chatting with your documents, running AI agents, and building workflows entire… | 96 | 66696 | active |
| MemPalace/mempalace MemPalace is a local‑first AI memory system that stores conversation and project data verbatim and makes it searchable via semantic search.… | 82 | 59621 | active |
| zylon-ai/private-gpt PrivateGPT is an open‑source API framework that turns locally hosted LLMs into production‑grade AI services. It provides a Claude‑style API… | 90 | 57558 | active |
| moeru-ai/airi Project AIRI is an open-source, self-hosted AI companion (waifu/virtual character) platform inspired by Neuro-sama, supporting Live2D and V… | 87 | 50294 | active |
| LocalAI LocalAI is an open‑source AI runtime that provides a single binary exposing OpenAI‑compatible APIs for text, vision, audio, and video model… | 93 | 49392 | active |
| HKUDS/nanobot nanobot is an ultra‑lightweight, open‑source AI agent framework written in Python. It provides a WebUI, terminal, and chat‑app interfaces w… | 82 | 49064 | active |
| zhayujie/CowAgent CowAgent is an open‑source AI assistant and agent harness that can plan tasks, run tools and custom skills, and maintain a personal knowled… | 98 | 47220 | active |
| LibreChat LibreChat is an open‑source, self‑hosted ChatGPT‑style web application written in TypeScript. It provides a unified UI for multiple LLM pro… | 85 | 46021 | active |
| LibreChat LibreChat is an open-source, self-hosted web application providing a unified ChatGPT-style interface for multiple AI providers (OpenAI, Ant… | 85 | 46021 | active |
| janhq/jan Jan is an open‑source desktop application that provides a ChatGPT‑like experience running large language models locally. It includes a GUI,… | 96 | 44984 | active |
| chatanywhere/GPT_API_free GPT_API_free is a hosted API service that provides free access to multiple large language models such as GPT, DeepSeek, Claude, Gemini, and… | 72 | 43890 | active |
| BettaFish MiroFish is a Python‑based multi‑agent AI engine that creates a high‑fidelity digital twin of real‑world scenarios. It lets users inject se… | 75 | 42341 | active |
| chatboxai/chatbox Chatbox is a cross‑platform desktop and mobile client for interacting with LLMs such as ChatGPT, Claude, Gemini and others. It provides a G… | 96 | 41982 | active |
| AstrBot AstrBot is an open-source AI agent assistant and development framework written in Python. It provides multi‑platform LLM chatbots with plug… | 95 | 41689 | active |
| AstrBot AstrBot is a multi-platform LLM chatbot and agentic AI assistant development framework written in Python. It integrates many instant messag… | 95 | 41689 | active |
| HKUDS/DeepTutor DeepTutor is an open‑source, agentic framework that combines large language models with retrieval‑augmented generation to deliver lifelong,… | 79 | 41457 | active |
| THU-MAIC/OpenMAIC OpenMAIC is an open-source web application that provides an immersive multi‑agent learning environment. It lets users launch and interact w… | 81 | 39947 | active |
| QuivrHQ/quivr Quivr is an opinionated RAG (Retrieval-Augmented Generation) library, available as the quivr-core Python package, that lets developers inge… | 76 | 39579 | active |
| chatchat-space/Langchain-Chatchat Langchain-Chatchat is an open-source, offline-deployable RAG and Agent application built on Langchain and LLMs such as ChatGLM, Qwen, and L… | 41 | 38672 | active |
| stanfordnlp/dspy DSPy is a Python library that lets you program language models using declarative signatures instead of hand‑written prompts. It provides mo… | 93 | 38406 | active |
| CopilotKit/CopilotKit CopilotKit is an open‑source SDK that lets developers embed LLM‑driven agents into web, mobile and collaboration front‑ends. It provides Re… | 92 | 37919 | active |
| agentscope-ai/QwenPaw QwenPaw is a self-hosted personal AI assistant built in Python that connects to multiple chat channels (DingTalk, Feishu, QQ, Discord, iMes… | 80 | 35441 | active |
| OpenBMB/ChatDev ChatDev 2.0 (DevAll) is a zero‑code multi‑agent platform that lets users configure and run complex LLM‑driven workflows without writing cod… | 75 | 34379 | active |
| SillyTavern SillyTavern is a locally installed, web‑based user interface for interacting with text‑generation LLMs, image generators, and TTS models. I… | 91 | 33851 | active |
| SillyTavern SillyTavern is a locally installed, self-hosted web UI for interacting with text generation LLMs, image generation engines, and TTS voice m… | 91 | 33851 | active |
| zeroclaw-labs/zeroclaw ZeroClaw is a lightweight, single‑binary personal AI assistant written in Rust. It runs on any OS, connects to dozens of LLM providers and … | 81 | 32990 | active |
| onyx-dot-app/onyx Onyx is an open‑source AI platform that provides a chat interface powered by large language models and a context layer that indexes knowled… | 93 | 32566 | active |
| XiaoZhi AI Chatbot XiaoZhi is an ESP32‑based chatbot that runs large language models via the MCP protocol, offering voice interaction, device control, and mul… | 91 | 31445 | active |
| XiaoZhi AI Chatbot XiaoZhi is an open-source MCP-based AI voice chatbot firmware for ESP32-family microcontrollers, connecting large language models like Qwen… | 91 | 31445 | active |
| Tencent/WeKnora WeKnora is an open‑source LLM‑powered knowledge platform that transforms raw documents into a queryable RAG system and autonomous reasoning… | 84 | 31280 | active |
| Supermemory Supermemory is a fast, scalable memory and context engine for AI agents, offered as a hosted API with self‑hosted options. It provides auto… | 89 | 31077 | active |
| nanocoai/nanoclaw NanoClaw is a lightweight AI assistant that runs each agent in an isolated Docker container. It connects to multiple messaging platforms an… | 81 | 30874 | active |
| DeepAgents Deep Agents is a production‑ready, extensible agent harness for building LLM‑driven applications. It provides built‑in filesystem access, c… | 82 | 30425 | active |
| anywhere-labs/dsh-desktop DSH Desktop is an open‑source native client that brings the DeepSeek Harness web UI and plugin ecosystem to Windows and macOS. It runs as a… | 79 | 30031 | active |
| sipeed/picoclaw PicoClaw is an ultra‑lightweight AI assistant written in Go that runs on $10 hardware with less than 10 MB RAM. It provides a self‑containe… | 76 | 30013 | active |
| labring/FastGPT FastGPT is an open‑source AI agent building platform that combines knowledge‑base retrieval, RAG, and visual workflow orchestration. It let… | 94 | 29869 | active |
| python-telegram-bot/python-telegram-bot python-telegram-bot is a pure Python, asynchronous wrapper around the Telegram Bot API. It provides handlers, application builders, and uti… | 89 | 29522 | stable |
| Mastra Mastra is a modern TypeScript framework for building AI-powered applications and autonomous agents. It provides model routing, workflow orc… | 87 | 28892 | active |
| Mastra Mastra is a TypeScript framework for building AI-powered applications and autonomous agents, with model routing across 40+ providers, graph… | 87 | 28892 | active |
| PrefectHQ/fastmcp FastMCP is a Pythonic framework for building Model Context Protocol (MCP) servers, clients, and interactive applications. It handles schema… | 84 | 27979 | active |
| Haystack Haystack is an open‑source Python framework for orchestrating LLM‑powered pipelines, agents and RAG applications. It provides modular compo… | 99 | 26720 | active |
| Cinnamon/kotaemon Kotaemon is an open-source RAG-based application providing a clean, customizable UI for chatting and doing question answering with your own… | 79 | 25795 | active |
| titanwings/distilly Distilly is a Python tool that distills a person's experience, judgment, voice, and working style from messages, documents, interviews, and… | 59 | 25182 | active |
| Wechaty Wechaty is an open‑source Conversational RPA SDK for building chatbots on instant‑messaging platforms. It provides a unified API and plugga… | 45 | 23348 | active |
| 1Panel-dev/MaxKB MaxKB is an open-source, self-hosted platform for building enterprise-grade AI agents with RAG pipelines, workflow orchestration, and MCP t… | 96 | 22992 | active |
| Opik Opik is an open‑source platform for LLM observability, evaluation and agent tracing. It provides dashboards, automated metrics and a conver… | 93 | 22726 | active |
| whatsapp-web.js whatsapp-web.js is a Node.js library that lets developers control WhatsApp Web programmatically. It uses a headless browser to expose most … | 90 | 22673 | active |
| coze-dev/coze-studio Coze Studio is an open-source, all-in-one AI agent development platform with visual, no-code/low-code tools for building, debugging, and de… | 67 | 21698 | active |
| vercel/chatbot Chatbot is an open‑source, full‑featured template built with Next.js and the Vercel AI SDK. It provides a ready‑to‑deploy AI chat applicati… | 67 | 20983 | active |
| pydantic/pydantic-ai Pydantic AI is a typed Python SDK for building AI agents and LLM applications. It provides an extensible agent loop, multi‑modal capabiliti… | 87 | 20670 | active |
| Nagi-ovo/voyager Voyager is a browser extension that enhances AI chat interfaces such as Gemini, Claude, ChatGPT and DeepSeek with workflow tools like timel… | 81 | 20422 | active |
| LifeOS Fabric is an open‑source Go framework that lets users organize and invoke AI prompts as modular building blocks. It provides a CLI and REST… | 79 | 19387 | active |
| lss233/kirara-ai Kirara AI is a self-hosted, DIY multimodal AI chatbot framework that connects large language models (DeepSeek, ChatGPT, Claude, Gemini, Oll… | 43 | 19123 | active |
| confident-ai/deepeval DeepEval is an open-source Python framework for evaluating LLM applications with pytest-style unit tests and 50+ research-backed metrics in… | 95 | 18733 | active |
| arc53/DocsGPT DocsGPT is an open-source AI platform for building private agents, assistants, and enterprise search over your own documents. It includes a… | 97 | 18312 | active |
| Parlant Parlant is an open-source Python framework that acts as an interaction control harness for building reliable, customer-facing LLM agents. I… | 78 | 18298 | active |
| LangBot LangBot is an open-source, production-grade platform for building AI-powered instant messaging bots, connecting LLMs and agent workflows to… | 95 | 18291 | active |
| xming521/WeClone WeClone is an end-to-end Python framework for creating a personal AI digital twin by fine-tuning large language models on your exported cha… | 78 | 18278 | active |
| hubotio/hubot Hubot is a JavaScript/Node.js framework for building customizable chat bots, originally created by GitHub to automate company chat rooms. I… | 87 | 16798 | active |
| Pipecat Pipecat is an open-source Python framework (BSD-2) for building real-time voice and multimodal conversational AI agents. It orchestrates sp… | 89 | 16579 | active |
| ai-shifu/ChatALL ChatALL is an Electron desktop application that sends prompts to multiple AI chatbots (ChatGPT, Claude, Bing Chat, ChatGLM, ERNIE, and more… | 72 | 16503 | active |
| Rapptz/discord.py discord.py is a modern, async-ready Python library wrapping the Discord API, including a commands extension for building bots. It handles r… | 74 | 16187 | stable |
| yc-software/qm QM is a self-hostable multiplayer agent harness that lets every employee in a company work with AI agents in personal and shared scopes acr… | 80 | 15434 | active |
| GaiZhenbiao/ChuanhuChatGPT Chuanhu Chat is a Python/Gradio-based web GUI for chatting with ChatGPT and many other LLMs (GPT-5/4, Claude, Gemini, ChatGLM, Llama, Ollam… | 64 | 15269 | active |
| Botpress Botpress is an open-source platform and hub for building, deploying, and managing GPT/LLM-powered chatbots and AI agents, with a visual stu… | 67 | 14946 | active |
| xcanwin/KeepChatGPT KeepChatGPT is a userscript/browser plugin that enhances ChatGPT's data security and usability. It keeps sessions alive, blocks tracking, d… | 69 | 14898 | active |
| ChatterBot ChatterBot is a Python library that provides a machine-learning based conversational dialog engine for building chat bots. It generates res… | 93 | 14520 | active |
| fathah/hermes-desktop Hermes One is a community-maintained native desktop app (Electron + React + TypeScript) for installing, configuring, and chatting with the … | 80 | 14407 | active |
| Open-LLM-VTuber Open-LLM-VTuber is a cross-platform AI companion application that enables real-time voice conversations with LLMs, featuring a Live2D avata… | 62 | 13896 | active |
| Fay Digital Human Framework Fay is an open-source Python digital human framework that connects 2.5D/3D/mobile/web digital humans or OpenAI-compatible LLMs to business … | 75 | 13549 | active |
| LangChain4j LangChain4j is an open-source Java library for building LLM-powered applications on the JVM, providing a unified API over 20+ LLM providers… | 97 | 13266 | active |
| assistant-ui/assistant-ui assistant-ui is an open-source TypeScript/React library of primitives and runtimes for building production-grade AI chat interfaces, with a… | 90 | 12564 | active |
| Chainlit/chainlit Chainlit is an open-source Python framework for building production-ready conversational AI applications with a built-in chat UI. It provid… | 94 | 12506 | active |
| Bisheng BISHENG is an open-source LLM DevOps (LLMOps) platform for building enterprise AI applications, offering GenAI workflow orchestration, RAG,… | 92 | 12032 | active |
| H2O h2oGPT is an Apache-2.0 open-source application for chatting with local, private LLMs and querying/summarizing your own documents (PDFs, Wo… | 10 | 11942 | active |
| EKKOLearnAI/hermes-studio Hermes Studio is a local-first multi-agent workspace that provides a desktop app, local runtime, and web console for coordinating AI agent … | 78 | 11462 | active |
| wangrongding/wechat-bot A Node.js-based multi-platform instant messaging AI agent built on Wechaty that connects WeChat, Telegram, WhatsApp, and Lark to LLM provid… | 65 | 11421 | active |
| huggingface/chat-ui Chat UI is the open source SvelteKit web application powering HuggingChat, providing a browser-based chat interface for LLMs. It connects t… | 79 | 10987 | active |
| NapCatQQ NapCatQQ is a modern bot protocol-side framework implemented on top of NTQQ, exposing a rich OneBot 11-compatible API for QQ messaging. It … | 88 | 10897 | active |
| VoltAgent/voltagent VoltAgent is an open-source TypeScript framework for building production-ready AI agents with memory, tools, RAG, guardrails, MCP, voice, a… | 82 | 10773 | active |
| ChatGPTBox-dev/chatGPTBox A browser extension that deeply integrates ChatGPT into your browsing experience across Chrome, Edge, Firefox, Safari, and Android. It prov… | 91 | 10757 | active |
| chathub-dev/chathub ChatHub is an all-in-one AI chat client, originally a Chrome/Edge browser extension and now also a web app and mobile/desktop apps, that le… | 58 | 10658 | active |
| lencx/ChatGPT A cross-platform ChatGPT desktop application built with Tauri (Rust) for Mac, Windows, and Linux. It wraps the ChatGPT web experience in a … | 23 | 54645 | maintenance |
| baptisteArno/typebot.io Typebot is a fair-source, self-hostable visual chatbot builder that lets users create advanced conversational apps and forms with 45+ build… | 97 | 10507 | active |
| sigoden/aichat AIChat is an all-in-one command-line LLM client written in Rust that connects to 20+ providers including OpenAI, Claude, Gemini, and Ollama… | 60 | 10471 | active |
| Evolution API Evolution API is an open-source REST API for WhatsApp and multi-channel messaging, supporting both the Baileys-based WhatsApp Web API and t… | 74 | 9837 | active |
| TencentCloud/Octop Octop is an open-source, self-hosted AI assistant built on a multi-agent, multi-user architecture that runs entirely on your own machine. I… | 81 | 9697 | active |
| CoAI.Dev (Chat Nio) CoAI.Dev is a self-hostable, multi-tenant AI platform combining a ChatGPT-style chat UI with an enterprise-grade unified LLM gateway suppor… | 50 | 9323 | active |
| shaxiu/XianyuAutoAgent An AI-powered customer service bot for the Xianyu (Goofish) secondhand marketplace that provides 24/7 automated message handling. It uses L… | 56 | 9275 | active |
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