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Directory/Open-source ChatGPT alternatives
Self-hosted and local chat

Open-source ChatGPT alternatives you can host yourself.

ChatGPT is a hosted product. The tools on this page are open-source chat interfaces, local model runners and self-hosted assistants taken from the hotaibuild directory — projects such as web UIs, desktop clients and agent-style front-ends whose public repositories remain active. They are not official OpenAI software, and a star count is not a promise that a project will match ChatGPT's features or models.

Browse the wider index at open source AI or the star-ordered list of best open-source AI tools.

  1. 01
    AutoGPTOpen Source

    AutoGPT is the vision of accessible AI for everyone, to use and to build on

    Developer ToolsFreeNOASSERTION187,991 GitHub stars
  2. 02
    ollamaOpen Source

    Get up and running with Kimi, GLM, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models

    Developer ToolsFreeMIT186,649 GitHub stars
  3. 03
    open-webuiOpen Source

    User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

    Writing & ResearchFreeNOASSERTION158,380 GitHub stars
  4. 04
    langflowOpen Source

    Langflow is a powerful tool for building and deploying AI-powered agents and workflows

    ProductivityFreeMIT156,529 GitHub stars
  5. 05
    cc-switchOpen Source

    A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode,DeepSeek Harness and more

    Developer ToolsFreeMIT153,595 GitHub stars
  6. 06
    llama.cppOpen Source

    LLM inference in C/C++

    Developer ToolsFreeMIT134,066 GitHub stars
  7. 07
    TradingAgentsOpen Source

    TradingAgents: Multi-Agents LLM Financial Trading Framework

    Finance & LegalFreeApache-2.0121,991 GitHub stars
  8. 08
    vllmOpen Source

    A high-throughput and memory-efficient inference and serving engine for LLMs

    Developer ToolsFreeApache-2.096,742 GitHub stars
  9. 09
    PaddleOCROpen Source

    Turn any PDF or image document into structured data for your AI

    Data & AnalyticsFreeApache-2.092,576 GitHub stars
  10. 10
    OmniRouteOpen Source

    Free MIT AI gateway: one endpoint, 375 providers (150+ free), 1,400+ models Kimi, Claude, GPT, Gemini, GLM, DeepSeek, MiniMax

    Developer ToolsFreeMIT86,442 GitHub stars
  11. 11
    lobehubOpen Source

    Add super-agents to the chats your team already uses.They take on work by themselves and get better every week

    Writing & ResearchFreeNOASSERTION84,983 GitHub stars
  12. 12
    screenshot-to-codeOpen Source

    Drop in a screenshot and convert it to clean code (HTML/Tailwind/React/Vue)

    Design & CreativeFreeMIT81,156 GitHub stars
  13. 13
    LlamaFactoryOpen Source

    Unified Efficient Fine-Tuning of 100+ LLMs & VLMs (ACL 2024)

    Developer ToolsFreeApache-2.075,998 GitHub stars
  14. 14
    clineOpen Source

    Autonomous coding agent as an SDK, IDE extension, or CLI assistant

    Developer ToolsFreeApache-2.071,522 GitHub stars
  15. 15
    daily_stock_analysisOpen Source

    LLM 驱动的多市场股票智能分析系统：多源行情、实时新闻、决策看板与自动推送，支持零成本定时运行。 LLM-powered multi-market stock analysis system with multi-source market data, real-time news,…

    Writing & ResearchFreeMIT69,845 GitHub stars
  16. 16
    anything-llmOpen Source

    Everything you need for a powerful local-first agent experience

    Writing & ResearchFreeMIT68,178 GitHub stars
  17. 17
    gpt4freeOpen Source

    The official gpt4free repository | various collection of powerful language models | opus 4.6 gpt 5.3 kimi 2.5 deepseek v3.2 gemini 3

    Developer ToolsFreeGPL-3.067,031 GitHub stars
  18. 18
    GPT-SoVITSOpen Source

    1 min voice data can also be used to train a good TTS model!

    Audio & VideoFreeMIT64,776 GitHub stars
  19. 19
    context7Open Source

    Context7 Platform -- Up-to-date docs for AI agents

    Developer ToolsFreeMIT64,590 GitHub stars
  20. 20
    PakeOpen Source

    Turn any website into a lightweight desktop app with one command, on macOS, Windows and Linux

    ProductivityFreeGPL-3.063,236 GitHub stars
  21. 21
    LocalAIOpen Source

    Run any model - LLMs, vision, voice, image, video - on any hardware

    Developer ToolsFreeMIT50,317 GitHub stars
  22. 22
    aiderOpen Source

    aider is AI pair programming in your terminal

    Developer ToolsFreeApache-2.050,062 GitHub stars
  23. 23
    janOpen Source

    Jan is an open source alternative to ChatGPT that runs 100% offline on your computer

    Writing & ResearchFreeNOASSERTION45,667 GitHub stars
  24. 24
    chatboxOpen Source

    Powerful AI Client

    Developer ToolsFreeGPL-3.042,299 GitHub stars
  25. 25
    Retrieval-based-Voice-Conversion-WebUIOpen Source

    Easily train a good VC model with voice data <= 10 mins!

    Audio & VideoFreeMIT39,166 GitHub stars
  26. 26
    sglangOpen Source

    SGLang is a high-performance serving framework for large language models and multimodal models

    Developer ToolsFreeApache-2.038,739 GitHub stars
  27. 27
    PDFMathTranslateOpen Source

    [EMNLP 2025 Demo] PDF scientific paper translation with preserved formats - 基于 AI 完整保留排版的 PDF 文档全文双语翻译，支持 Google/DeepL/Ollama/OpenAI 等服务，提供…

    Writing & ResearchFreeAGPL-3.038,367 GitHub stars
  28. 28
    khojOpen Source

    Build custom agents, schedule automations, do deep research

    Writing & ResearchFreeAGPL-3.038,108 GitHub stars
  29. 29
    WeKnoraOpen Source

    Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki

    Writing & ResearchFreeNOASSERTION37,185 GitHub stars
  30. 30
    next-ai-draw-ioOpen Source

    Draw and edit draw.io diagrams by chatting with an AI

    Writing & ResearchFreeApache-2.036,882 GitHub stars
  31. 31
    SillyTavernOpen Source

    LLM Frontend for Power Users

    Writing & ResearchFreeAGPL-3.035,528 GitHub stars
  32. 32
    ChatDevOpen Source

    ChatDev 2.0: Dev All through LLM-powered Multi-Agent Collaboration

    ProductivityFreeApache-2.034,725 GitHub stars
  33. 33
    tabbyOpen Source

    Self-hosted AI coding assistant

    Developer ToolsFreeNOASSERTION33,936 GitHub stars
  34. 34
    gpt-pilotOpen Source

    The first real AI developer

    Developer ToolsFreeNOASSERTION33,642 GitHub stars
  35. 35
    onyxOpen Source

    Open Source AI Platform - AI Chat with advanced features that works with every LLM

    Writing & ResearchFreeNOASSERTION33,335 GitHub stars
  36. 36
    serenaOpen Source

    A powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agent

    Developer ToolsFreeNOASSERTION31,296 GitHub stars
  37. 37
    dbxOpen Source

    25 MB lightweight cross-platform database client for 100+ databases, including MySQL, PostgreSQL, SQLite, Redis, MongoDB, DuckDB, SQL Server, and…

    Writing & ResearchFreeApache-2.030,032 GitHub stars
  38. 38
    qwen-codeOpen Source

    An open-source AI coding agent that lives in your terminal

    Developer ToolsFreeApache-2.029,396 GitHub stars
  39. 39
    mlflowOpen Source

    The open source AI engineering platform for agents, LLMs, and ML models

    Developer ToolsFreeApache-2.028,761 GitHub stars
  40. 40
    Chat2DBOpen Source

    Chat2DB is a free, cross-platform, local-first database client and SQL workspace for developers, DBAs, analysts, and data teams

    Writing & ResearchFreeNOASSERTION28,365 GitHub stars
  41. 41
    haystackOpen Source

    Open-source AI orchestration framework for building context-engineered, production-ready LLM applications

    Writing & ResearchFreeApache-2.026,990 GitHub stars
  42. 42
    lettaOpen Source

    Platform for stateful agents: AI with advanced memory that can learn and self-improve over time

    Writing & ResearchFreeApache-2.025,417 GitHub stars
  43. 43
    nextai-translatorOpen Source

    基于 ChatGPT API 的划词翻译浏览器插件和跨平台桌面端应用 - Browser extension and cross-platform desktop application for translation based on ChatGPT API

    Writing & ResearchFreeAGPL-3.025,038 GitHub stars
  44. 44
    TasmotaOpen Source

    Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules,…

    Writing & ResearchFreeGPL-3.024,979 GitHub stars
  45. 45
    MaxKBOpen Source

    🔥 MaxKB is an open-source platform for building enterprise-grade agents

    Writing & ResearchFreeGPL-3.023,143 GitHub stars
  46. 46
    voyagerOpen Source

    Enhancement suite for Gemini, AI Studio, Claude, ChatGPT & DeepSeek — plus a prompt manager for any website, DeepSeek Harness included

    Writing & ResearchFreeGPL-3.020,596 GitHub stars
  47. 47
    rocketride-serverOpen Source

    High-performance AI pipeline engine with a C++ core and 50+ Python-extensible nodes

    Developer ToolsFreeMIT20,065 GitHub stars
  48. 48
    hermes-webuiOpen Source

    Hermes WebUI: The best way to use Hermes Agent from the web or from your phone!

    Writing & ResearchFreeMIT19,482 GitHub stars
  49. 49
    web-llmOpen Source

    High-performance In-browser LLM Inference Engine

    Developer ToolsFreeApache-2.019,367 GitHub stars
  50. 50
    LangBotOpen Source

    Production-grade platform for building agentic IM bots - 生产级多平台智能机器人开发平台/ Agent、知识库编排、插件系统 / Bots for Discord / Slack / LINE / Telegram /…

    Writing & ResearchFreeApache-2.018,912 GitHub stars
  51. 51
    DocsGPTOpen Source

    Private AI platform for agents, assistants and enterprise search

    Writing & ResearchFreeMIT18,372 GitHub stars
  52. 52
    parlantOpen Source

    Parlant is an open platform for building customer-facing chat agents with AI

    Developer ToolsFreeApache-2.018,332 GitHub stars
  53. 53
    hydraOpen Source

    Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs

    Writing & ResearchFreeApache-2.017,659 GitHub stars
  54. 54
    OpenMetadataOpen Source

    The Open Context Layer for Data and AI , OpenMetadata is the open platform for building trusted data context and business semantics for humans, AI…

    Writing & ResearchFreeApache-2.015,742 GitHub stars
  55. 55
    cc-hahaOpen Source

    本地优先的跨平台 Claude Code / AI Agent 桌面工作台：多 Agent 协作、Git Worktree、代码 Diff、技能市场、多模型、Computer Use、桌面宠物；支持微信、飞书、钉钉及 H5 等远程访问。 | Local-first Claude Code /…

    ProductivityFreeNOASSERTION15,403 GitHub stars
  56. 56
    ChuanhuChatGPTOpen Source

    Supports agents, file-based QA, GPT finetuning and query with web search

    Writing & ResearchFreeGPL-3.015,242 GitHub stars
  57. 57
    waoowaooOpen Source

    首家工业级全流程 AI 影视生产平台。Industry-first professional AI Agent platform for controllable film & video production

    ProductivityFreeNOASSERTION14,837 GitHub stars
  58. 58
    casdoorOpen Source

    An open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with web UI supporting OpenClaw, MCP,…

    Writing & ResearchFreeApache-2.014,828 GitHub stars
  59. 59
    hermes-desktopOpen Source

    Desktop Companion for Hermes Agent

    Writing & ResearchFreeMIT14,566 GitHub stars
  60. 60
    claudecodeuiOpen Source

    Use Claude Code, OpenCode, Cursor CLI, and Codex on mobile and web with CloudCLI (aka Claude Code UI)

    Developer ToolsFreeAGPL-3.014,561 GitHub stars
  61. 61
    voice-proOpen Source

    Gradio WebUI for creators and developers, featuring key TTS (Edge-TTS, kokoro) and zero-shot Voice Cloning (E2 & F5-TTS, CosyVoice), with Whisper…

    Audio & VideoFreeGPL-3.013,425 GitHub stars
  62. 62
    bishengOpen Source

    BISHENG is an open-source enterprise Agent platform for building, deploying, and managing AI applications

    Writing & ResearchFreeApache-2.012,252 GitHub stars
  63. 63
    nginx-uiOpen Source

    Yet another WebUI for Nginx

    Developer ToolsFreeAGPL-3.011,758 GitHub stars
  64. 64
    ekko-studioOpen Source

    Ekko Studio is a local-first AI workspace for multi-agent chat, coding, and visual workflows, available on desktop and the web

    ProductivityFreeNOASSERTION11,745 GitHub stars
  65. 65
    wechat-botOpen Source

    🤖 Multi-platform IM AI Agent for Telegram, WhatsApp, Lark, and WeChat

    Writing & ResearchFreeMIT11,551 GitHub stars
  66. 66
    cindyOpen Source

    The open-source AI agent that works out of the box · 想到，就能做到。开源、开箱即用的 AI Agent。

    ProductivityFreeApache-2.09,815 GitHub stars
  67. 67
    inferenceOpen Source

    Swap GPT for any LLM by changing a single line of code

    Audio & VideoFreeApache-2.09,653 GitHub stars
  68. 68
    sphereOpen Source

    A Web3 wallet and agent platform for the Unicity network - crypto wallet, DMs, group chat, and marketplace

    Developer ToolsFree9,629 GitHub stars
  69. 69
    dashboard-iconsOpen Source

    3,400+ curated icons and logos for dashboards and AI agents

    Writing & ResearchFreeApache-2.09,067 GitHub stars
  70. 70
    StabilityMatrixOpen Source

    Multi-Platform Package Manager for Stable Diffusion

    Design & CreativeFreeAGPL-3.09,015 GitHub stars
  71. 71
    lamdaOpen Source

    Android Full-Stack Device Control Platform: WebRTC/H.264 remote desktop, UI/OCR/image-matching automation, one-click MITM, built-in Frida,…

    Developer ToolsFreeMIT8,724 GitHub stars
  72. 72
    FinRobotOpen Source

    FinRobot: An Open-Source AI Agent Platform for Financial Applications using Large Language Models

    Writing & ResearchFreeApache-2.08,409 GitHub stars
  73. 73
    backrestOpen Source

    Backrest is a web UI and orchestrator for restic backup

    Writing & ResearchFreeGPL-3.07,884 GitHub stars
  74. 74
    sygil-webuiOpen Source

    Stable Diffusion web UI

    Design & CreativeFreeAGPL-3.07,862 GitHub stars
  75. 75
    sdnextOpen Source

    SD.Next: All-in-one WebUI for AI generative image and video creation, captioning and processing

    Design & CreativeFreeApache-2.07,376 GitHub stars
  76. 76
    big-AGIOpen Source

    AI suite powered by state-of-the-art models and providing advanced AI/AGI functions

    Design & CreativeFreeMIT7,169 GitHub stars
  77. 77
    VueTorrentOpen Source

    The sleekest looking WEBUI for qBittorrent made with Vuejs!

    Writing & ResearchFreeGPL-3.07,046 GitHub stars
  78. 78
    KunOpen Source

    Local-first AI agent workspace for coding, writing, design, research, and automation — one runtime for desktop GUI and TUI

    ProductivityFreeNOASSERTION6,378 GitHub stars
  79. 79
    EverywhereOpen Source

    On-screen aware AI assistant for your desktop

    Writing & ResearchFreeNOASSERTION6,354 GitHub stars
  80. 80
    heliconeOpen Source

    🧊 Open source LLM observability platform

    Developer ToolsFreeApache-2.06,277 GitHub stars
  81. 81
    LobsterAIOpen Source

    Open-source, desktop-grade AI agent that gets real work done — data analysis, slides, docs, video & web research

    Developer ToolsFreeMIT6,179 GitHub stars
  82. 82
    enchantedOpen Source

    Enchanted is iOS and macOS app for chatting with private self hosted language models such as Llama2, Mistral or Vicuna using Ollama

    Writing & ResearchFreeApache-2.06,014 GitHub stars
  83. 83
    SmartSubOpen Source

    视频转字幕、字幕翻译、AI 配音与声音克隆、字幕烧录——免费开源的一站式桌面工具。基于 Whisper / FunASR 等本地模型离线语音转文字，批量处理 + 全平台 GPU 加速，跨 Windows / macOS / Linux。Free, open-source desktop…

    Audio & VideoFreeMIT6,011 GitHub stars
  84. 84
    sqlchatOpen Source

    Chat-based SQL Client and Editor for the next decade

    Writing & ResearchFreeMIT5,856 GitHub stars
  85. 85
    YouDub-webuiOpen Source

    Open-source AI video localization and dubbing for YouTube/Bilibili: speech recognition, subtitle translation, voice cloning, audio mixing and…

    Audio & VideoFreeApache-2.05,830 GitHub stars
  86. 86
    openagentOpen Source

    ⚡️next-generation personal AI assistant powered by LLM, RAG and agent loops, supporting computer-use, browser-use and coding agent, demo:

    Developer ToolsFreeApache-2.05,744 GitHub stars
  87. 87
    ComfyUI-CopilotOpen Source

    An AI-powered custom node for ComfyUI designed to enhance workflow automation and provide intelligent assistance

    Design & CreativeFreeMIT5,581 GitHub stars
  88. 88
    devspaceOpen Source

    Minimal Coding Agent Harness on MCP for ChatGPT, Claude, Hermes, Grok Bot, OpenClaw

    Developer ToolsFreeMIT5,463 GitHub stars
  89. 89
    tabularisOpen Source

    Open-source desktop SQL workspace with 3 built-in database drivers and 29 shipped driver plugins, including SQL Server, DuckDB, ClickHouse and Redis

    Writing & ResearchFreeApache-2.05,452 GitHub stars
  90. 90
    DeskcommCRMOpen Source

    Open-source AI sales OS — self-hosted CRM with native AI agents + WhatsApp (WAHA)

    Writing & ResearchFreeMIT5,350 GitHub stars
  91. 91
    h2o-llmstudioOpen Source

    H2O LLM Studio - a framework and no-code GUI for fine-tuning LLMs

    Writing & ResearchFreeApache-2.05,193 GitHub stars
  92. 92
    chat-on-steroidsOpen Source

    Cross-platform local MCP capabilities for ChatGPT with Chrome integration, Goal, Compact & Resume, and durable multi-agent workflows

    ProductivityFreeMIT5,154 GitHub stars
  93. 93
    sellbirdOpen Source

    Sellbird (formerly Harvey): the open-source outreach platform that runs on your Claude or ChatGPT plan

    ProductivityFreeAGPL-3.05,119 GitHub stars
  94. 94
    cube-studioOpen Source

    cube…

    ProductivityFreeNOASSERTION5,084 GitHub stars
  95. 95
    all-api-hubOpen Source

    All-in-one New-API/Sub2API account hub: balance/usage dashboard, auto check-in, one-click keys, price comparison, health checks, plus advanced…

    Writing & ResearchFreeAGPL-3.05,059 GitHub stars
  96. 96
    OpenAgentsOpen Source

    [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild

    Writing & ResearchFreeApache-2.04,868 GitHub stars
  97. 97
    lollms-webuiOpen Source

    Lord of Large Language and Multi modal Systems Web User Interface

    Developer ToolsFreeApache-2.04,794 GitHub stars
  98. 98
    Cli-Proxy-API-Management-CenterOpen Source

    This is a WebUI interface based on CLI-Proxy-API, designed to simplify configuration modifications and runtime status monitoring

    Writing & ResearchFreeMIT4,786 GitHub stars
  99. 99
    webuiOpen Source

    Use any web browser or WebView as GUI, with your preferred language in the backend and modern web technologies in the frontend, all in a…

    ProductivityFreeMIT4,651 GitHub stars
  100. 100
    docker-transmission-openvpnOpen Source

    Docker container running Transmission torrent client with WebUI over an OpenVPN tunnel

    Developer ToolsFreeGPL-3.04,576 GitHub stars
  101. 101
    LongMemoryOpen Source

    Local persistent memory store for LLM applications including claude desktop, github copilot, codex, antigravity, etc

    Developer ToolsFreeApache-2.04,573 GitHub stars
  102. 102
    logfireOpen Source

    AI observability platform for production LLM and agent systems

    ProductivityFreeMIT4,547 GitHub stars
  103. 103
    archestraOpen Source

    Enterprise AI Platform with guardrails, MCP registry, gateway & orchestrator

    Writing & ResearchFreeNOASSERTION4,438 GitHub stars
  104. 104
    switchOpen Source

    Open-source AI teammates in Slack, Teams, Discord, Telegram and Mattermost

    Developer ToolsFreeNOASSERTION4,369 GitHub stars
  105. 105
    PyChatGPTOpen Source

    ⚡️ Python client for the ChatGPT API with, conversation tracking, proxy support and more

    Writing & ResearchFreeMIT4,182 GitHub stars
  106. 106
    Rapid-MLXOpen Source

    Rapid-MLX is an open-source (Apache 2.0) OpenAI- and Anthropic-compatible LLM inference server for Apple Silicon, built on MLX, focused on…

    Developer ToolsFreeNOASSERTION4,131 GitHub stars
  107. 107
    FedMLOpen Source

    FEDML - The unified and scalable ML library for large-scale distributed training, model serving, and federated learning

    ProductivityFreeApache-2.04,070 GitHub stars
  108. 108
    codex-desktop-linuxOpen Source

    Unofficial ChatGPT desktop app for Linux (formerly the Codex app), built locally from OpenAI’s official macOS app

    ProductivityFreeMIT3,932 GitHub stars
  109. 109
    ClaraVerseOpen Source

    Claraverse is a opesource privacy focused ecosystem to replace ChatGPT, Claude, N8N, ImageGen with your own hosted llm, keys and compute

    ProductivityFreeNOASSERTION3,903 GitHub stars
  110. 110
    golutraOpen Source

    Multi-agent AI orchestration platform for automation, workflows, and developer tools

    Developer ToolsFreeNOASSERTION3,865 GitHub stars