The best open-source chatbots and AI assistants in 2026

Last updated

Sep 11, 2026

Projects considered

73

Commits reviewed

0 of 73

Conversational interfaces you can self-host or embed — chat UIs, assistant shells and the front ends people put in front of a model.

Mostly written in Python, TypeScript, HTML, C++ and Jupyter Notebook.

1. 1

   Open-Assistant

   LAION-AI/Open-AssistantDormant

   OpenAssistant is a chat-based assistant that understands tasks, can interact with third-party systems, and retrieve information dynamically to do so.

   No push in 2.2 years ago.Apache License 2.0PythonApps37.4k

   Save
2. 2

   assistant-ui

   assistant-ui/assistant-ui

   Typescript/React Library for AI Chat 💬🚀

   Pushed yesterday.MIT LicenseTypeScriptDesign systems12.9k+149

   Save
3. 3

   prompts.chat

   f/prompts.chat

   f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Free and open source — self-host for your organization with complete privacy.

   Pushed yesterday.OtherHTMLApps175.7k+975

   Save
4. 4

   AstrBot

   AstrBotDevs/AstrBot

   AI Agent Assistant & development framework that integrates lots of IM platforms, LLMs, plugins and AI feature, and can be your openclaw alternative. ✨

   Pushed yesterday.GNU Affero General Public License v3.0PythonDeveloper tools45.8k+1.7k

   Save
5. 5

   QwenPaw

   agentscope-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.

   Pushed yesterday.Apache License 2.0PythonAgents37.3k+749

   Save
6. 6

   AionUi

   iOfficeAI/AionUi

   Open-source 24/7 Cowork app for OpenClaw, Hermes, Claude Code, Codex, OpenCode and 20+ more CLI Agent | Customize your assistants | Team them up｜Star if you like it!

   Pushed 12 days ago.Apache License 2.0TypeScriptApps34.0k+200

   Save
7. 7

   xiaozhi-esp32

   78/xiaozhi-esp32

   An MCP-based chatbot | 一个基于MCP的聊天机器人

   Pushed 3 days ago.MIT LicenseC++Developer tools32.5k+485

   Save
8. 8

   leon

   leon-ai/leon

   🧠 Leon is your open-source personal assistant.

   Pushed yesterday.MIT LicenseTypeScriptApps17.6k+21

   Save
9. 9

   DeepPavlov

   deeppavlov/DeepPavlovDormant

   An open source library for deep learning end-to-end dialog systems and chatbots.

   No push in over a year ago.Apache License 2.0PythonDeveloper tools7.0k+1

   Save
10. 10

    deepchat

    ThinkInAIXYZ/deepchat

    🐬DeepChat - A smart assistant that connects powerful AI to your personal world

    Pushed yesterday.Apache License 2.0TypeScriptApps6.4k+6

    Save
11. 11

    COMTool

    Neutree/COMTool

    Cross platform communicate assistant(Serial/network/terminal tool)（ 跨平台 串口调试助手 网络调试助手 终端工具 linux windows mac Raspberry Pi ）支持插件和二次开发

    Pushed 26 days ago.GNU Lesser General Public License v3.0PythonPlugins2.6k+1

    Save
12. 12

    openclaw

    openclaw/openclaw

    The AI that really does things. Any OS. Any Platform. The lobster way. 🦞

    Pushed yesterday.OtherTypeScriptApps393.8k+629

    Save
13. 13

    hermes-agent

    NousResearch/hermes-agent

    The agent that grows with you

    Pushed yesterday.MIT LicensePythonAgents260.1k+2.5k

    Save
14. 14

    langflow

    langflow-ai/langflow

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

    Pushed yesterday.MIT LicensePythonAgents156.3k+224

    Save
15. 15

    langchain

    langchain-ai/langchain

    The agent engineering platform.

    Pushed yesterday.MIT LicensePythonAgents148.9k+391

    Save
16. 16

    OpenHands

    OpenHands/OpenHands

    🙌 OpenHands: AI-Driven Development

    Pushed yesterday.MIT LicenseTypeScriptApps92.6k+581

    Save
17. 17

    lobehub

    lobehub/lobehub

    🤯 LobeHub is your Chief Agent Operator, organizing your agents into 7×24 operations by hiring, scheduling, and reporting on your entire AI team.

    Pushed yesterday.OtherTypeScriptAgents83.8k+252

    Save
18. 18

    unsloth

    unslothai/unsloth

    Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3, Gemma 4, FLUX and more.

    Pushed yesterday.Apache License 2.0PythonApps79.0k+386

    Save
19. 19

    oh-my-openagent

    code-yeongyu/oh-my-openagent

    OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.

    Pushed yesterday.OtherTypeScriptApps70.7k+268

    Save
20. 20

    mem0

    mem0ai/mem0

    The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

    Pushed 4 days ago.Apache License 2.0PythonAgents68.3k+425

    Save
21. 21

    autogen

    microsoft/autogen

    A programming framework for agentic AI

    Pushed 6 days ago.Creative Commons Attribution 4.0 InternationalPythonDeveloper tools61.7k+104

    Save
22. 22

    llm-app

    pathwaycom/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.

    Pushed yesterday.MIT LicenseJupyter NotebookApps58.7k

    Save
23. 23

    ChatGPT

    lencx/ChatGPTDormant

    ❄️ ChatGPT Desktop Application (Mac, Windows and Linux)

    No push in 2.2 years ago.No license detectedRustApps54.7k+11

    Save
24. 24

    nanobot

    HKUDS/nanobot

    Ultra-lightweight, open-source, self-hosted personal AI agent framework in Python with WebUI, tools, memory, MCP, multi-agent workflows, automation, and chat apps

    Pushed yesterday.MIT LicensePythonApps49.8k+318

    Save
25. 25

    LibreChat

    danny-avila/LibreChat

    Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active

    Pushed yesterday.MIT LicenseTypeScriptDeveloper tools46.7k+302

    Save
26. 26

    jan

    janhq/jan

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

    Pushed yesterday.OtherTypeScriptApps45.4k+258

    Save
27. 27

    langgraph

    langchain-ai/langgraph

    Build resilient agents.

    Pushed yesterday.MIT LicensePythonAgents44.4k+411

    Save
28. 28

    chatbox

    chatboxai/chatbox

    Powerful AI Client

    Pushed 6 days ago.GNU General Public License v3.0TypeScriptApps42.2k+85

    Save
29. 29

    ChatTTS

    2noise/ChatTTSSlowing

    A generative speech model for daily dialogue.

    Last push 7 months ago.GNU Affero General Public License v3.0PythonApps40.0k+26

    Save
30. 30

    quivr

    The-Vibe-Company/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.

    Pushed yesterday.OtherPythonUI / Frontend39.6k+18

    Save
31. 31

    Langchain-Chatchat

    chatchat-space/Langchain-ChatchatSlowing

    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

    Last push 12 months ago.Apache License 2.0PythonApps38.7k+4

    Save
32. 32

    CopilotKit

    CopilotKit/CopilotKit

    The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol

    Pushed yesterday.MIT LicenseTypeScriptApps38.5k+220

    Save
33. 33

    khoj

    khoj-ai/khojSlowing

    Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.

    Last push 3 months ago.GNU Affero General Public License v3.0PythonAgents38.0k+124

    Save
34. 34

    Hello-Python

    mouredev/Hello-PythonDormant

    Curso para aprender el lenguaje de programación Python desde cero y para principiantes. 100 clases, 44 horas en vídeo, código, proyectos y grupo de chat. Fundamentos, frontend, backend, testing, IA...

    No push in over a year ago.Apache License 2.0PythonUI / Frontend38.0k+74

    Save
35. 35

    WeKnora

    Tencent/WeKnora

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

    Pushed yesterday.OtherGoPlugins36.4k+740

    Save
36. 36

    agentscope

    agentscope-ai/agentscope

    Build and run agents you can see, understand and trust.

    Pushed yesterday.Apache License 2.0PythonAgents35.3k+912

    Save
37. 37

    SillyTavern

    SillyTavern/SillyTavern

    LLM Frontend for Power Users.

    Pushed 1 months ago.GNU Affero General Public License v3.0JavaScriptApps35.3k+240

    Save
38. 38

    onyx

    onyx-dot-app/onyx

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

    Pushed yesterday.OtherPythonApps33.2k+155

    Save
39. 39

    9router

    decolua/9router

    Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits.

    Pushed 7 days ago.MIT LicenseJavaScriptApps31.9k+376

    Save
40. 40

    sim

    simstudioai/sim

    Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

    Pushed yesterday.Apache License 2.0TypeScriptApps30.0k+55

    Save

Showing the top 40 of 73. Search the full catalog.