← All Tools 🎮 小游戏
🚀 AI Agents

Best Open Source AI Agent Frameworks 2026

A curated ranking of 100 open-source autonomous AI agent frameworks, sorted by GitHub stars. From multi-agent orchestration and browser automation to code agents and LLM workflow systems.

100 AI Agents Listed
2.0M+ Total GitHub Stars
100% Open Source

Showing 100 ai agents sorted by GitHub stars — all open-source with proven community adoption.

#1
n8n ★ 193k+ Featured

Low-code workflow automation with 400+ integrations and AI

automation workflow no-code open-source Sustainable Use License
#2
AutoGPT ★ 185k+ Featured

Autonomous AI agent platform for complex task execution

agent autonomous open-source llm MIT
#3
Langflow ★ 149k+

Visual framework for building AI agents and RAG apps

agent workflow rag open-source MIT
#4
Dify ★ 146k+ Featured

Open-source LLM app development and orchestration platform

agent platform workflow open-source Apache-2.0
#5
Browser Use ★ 100k+ Featured

Let AI control a browser autonomously to complete web tasks

browser automation autonomous open-source MIT
#6
MCP Servers ★ 88k+

Reference implementations for Model Context Protocol servers

agent mcp tools open-source
#7
OpenHands ★ 78k+ Featured

Platform for AI software development agents

agent code autonomous open-source MIT
#8
MetaGPT ★ 69k+

Multi-agent framework assigning roles to GPT models

agent multi-agent code open-source MIT
#9
Open Interpreter ★ 64k+

Autonomous agent that writes and executes code on your machine

agent code autonomous open-source AGPL-3.0
#10
Cline ★ 64k+ Featured

Autonomous coding agent in VS Code with file editing and terminal

code vscode autonomous open-source Apache-2.0
#11
AutoGen ★ 59k+ Featured

Microsoft's multi-agent conversation framework for LLM automation

agent multi-agent microsoft open-source MIT
#12
GPT Engineer ★ 55k+

Describe what you want and AI builds the codebase

agent code autonomous open-source MIT
#13
CrewAI ★ 54k+

Framework for orchestrating role-playing AI agents

agent multi-agent framework open-source MIT
#14
Flowise ★ 54k+

Drag-and-drop UI to build LLM workflows

agent workflow no-code open-source Apache-2.0
#15
Agno ★ 41k+

Lightweight library for building multi-modal agents

agent multi-modal framework open-source Apache-2.0
#16
Phidata ★ 41k+

Build multimodal AI agents with memory, knowledge and tools

agent multimodal knowledge open-source
#17
AgentGPT ★ 36k+

Assemble and deploy autonomous AI agents in your browser

agent autonomous web open-source GPL-3.0
#18
LangGraph ★ 35k+

Build stateful multi-actor LLM applications as graphs

agent graph stateful open-source
#19
Playwright MCP ★ 34k+

Microsoft MCP server for Playwright browser automation

agent browser mcp microsoft
#20
TaskMatrix ★ 34k+

Connect ChatGPT with AI models and APIs as tools

agent tools microsoft open-source MIT
#21
GPT Pilot ★ 34k+

AI coding assistant that builds full applications from scratch

agent code autonomous open-source MIT
#22
ChatDev ★ 34k+

Communicative agents building software as a virtual company

agent multi-agent code open-source Apache-2.0
#23
STORM ★ 29k+

Stanford system for writing Wikipedia-like articles with LLMs

agent research writing open-source
#24
FastGPT ★ 29k+

Knowledge-based platform for building RAG and AI workflows

agent rag workflow open-source Apache-2.0
#25
SmolAgents ★ 28k+

HuggingFace's lightweight library for building AI agents

agent huggingface lightweight open-source
#26
GPT Researcher ★ 28k+

Autonomous agent for comprehensive online research

agent research autonomous open-source
#27
ScrapeGraphAI ★ 27k+

Web scraping using LLM and graph logic

agent scraping web open-source
#28
AgentScope ★ 27k+

Alibaba's multi-agent platform for LLM-based applications

agent multi-agent platform open-source
#29
Vercel AI SDK ★ 25k+

AI SDK for building conversational streaming UI in React/Next.js

agent react streaming open-source
#30
JARVIS (HuggingGPT) ★ 25k+

Connects LLMs with HuggingFace models as tool executors

agent tools microsoft open-source
#31
Roo Code ★ 24k+

Enhanced autonomous coding agent with multi-mode support

code vscode autonomous open-source
#32
Vanna ★ 24k+

AI-powered SQL generation and database chat

agent sql data open-source
#33
Letta ★ 23k+

Stateful LLM agents with long-term memory (formerly MemGPT)

agent memory stateful open-source
#34
Stagehand ★ 23k+

AI-powered browser automation framework with natural language

agent browser automation open-source
#35
Prefect ★ 23k+

Modern workflow orchestration for data and AI pipelines

workflow orchestration automation open-source
#36
BabyAGI ★ 22k+

Task-driven autonomous AI agent system

agent autonomous task open-source MIT
#37
OpenAI Swarm ★ 22k+

OpenAI's experimental multi-agent orchestration framework

agent multi-agent openai open-source
#38
Generative Agents ★ 22k+

Stanford simulation of human behavior with AI agents

agent simulation research open-source
#39
Rasa ★ 21k+

Open-source conversational AI and chatbot framework

agent chatbot nlp open-source
#40
SWE-agent ★ 20k+

Agent that autonomously fixes GitHub issues in software repos

agent code autonomous open-source
#41
DB-GPT ★ 19k+

Private LLM-based database agent and RAG framework

agent database sql open-source
#42
Pydantic AI ★ 18k+

Production-grade type-safe agent framework by Pydantic

agent type-safe production open-source
#43
SuperAGI ★ 18k+

Open-source autonomous AI agent infrastructure

agent autonomous platform open-source
#44
CAMEL ★ 17k+

Communicative agents for mind exploration

agent multi-agent research open-source
#45
Anthropic Quickstarts ★ 17k+

Reference implementations for Claude agents including computer use

agent claude computer-use open-source
#46
Botpress ★ 15k+

Developer-first platform for building conversational AI

agent chatbot platform open-source
#47
QAnything ★ 14k+

NetEase's local knowledge base Q&A system

agent rag local open-source
#48
Gorilla ★ 13k+

LLM connected to massive APIs for accurate function calling

agent api function-calling open-source
#49
MaxKB ★ 12k+

Open knowledge base Q&A system with RAG and agents

agent rag knowledge-base open-source
#50
Bisheng ★ 11k+

Enterprise generative AI platform for intelligent workflows

agent enterprise workflow open-source
#51
LiveKit Agents ★ 11k+

Framework for building real-time voice and video AI agents

agent voice real-time open-source
#52
AI Town ★ 10k+

Multiplayer AI simulation of agents living in a virtual town

agent simulation social open-source
#53
UFO ★ 9.1k+

Microsoft's UI-focused AI agent for Windows desktop tasks

agent desktop windows microsoft
#54
Spring AI ★ 9.0k+

Spring framework for Java AI applications and agents

agent java framework open-source
#55
Mage AI ★ 8.8k+

Modern data pipeline and ML orchestration tool

agent data pipeline open-source
#56
XAgent ★ 8.5k+

Autonomous LLM agent for solving complex tasks

agent autonomous task open-source
#57
R2R ★ 7.9k+

Production-ready RAG framework with knowledge graph support

agent rag knowledge-graph open-source
#58
Sweep ★ 7.7k+

AI-powered GitHub assistant that turns issues into pull requests

agent code github open-source
#59
Multi-Agent Orchestrator ★ 7.7k+

AWS framework for orchestrating multiple AI agents

agent orchestration aws open-source
#60
TinyTroupe ★ 7.5k+

Microsoft's LLM-powered multiagent persona simulation

agent simulation personas microsoft
#61
Voyager ★ 7.0k+

LLM-powered lifelong learning agent in Minecraft

agent research game open-source
#62
AppAgent ★ 6.8k+

Multimodal agent for smartphone app interactions

agent mobile multimodal open-source
#63
TaskWeaver ★ 6.2k+

Code-first agent framework for data analytics tasks

agent code data microsoft
#64
Atomic Agents ★ 6.0k+

Modular, composable AI agent building framework

agent modular composable open-source
#65
ToolBench ★ 5.7k+

Training and evaluating LLMs for tool use with 16000+ APIs

agent tools benchmark open-source
#66
AgentOps ★ 5.6k+

Python SDK for AI agent observability and testing

agent observability monitoring open-source
#67
AgentVerse ★ 5.1k+

Platform for deploying multiple LLM-based agents collaboratively

agent simulation multi-agent open-source
#68
OpenAgents ★ 4.8k+

Open platform for hosting and using language agents

agent platform open-source research
#69
Botasaurus ★ 4.8k+

Anti-detect browser framework for web scraping agents

agent scraping browser open-source
#70
Zep ★ 4.7k+

Fast, scalable memory layer for AI agents and assistants

agent memory storage open-source
#71
Rivet ★ 4.6k+

Visual AI programming environment for building LLM pipelines

agent visual ide open-source
#72
Agency Swarm ★ 4.5k+

Framework for creating collaborative AI agent swarms

agent swarm multi-agent open-source
#73
Agent Service Toolkit ★ 4.3k+

Full toolkit for building and deploying LangGraph agents

agent langgraph deployment open-source
#74
ModelScope Agent ★ 4.3k+

Alibaba's ModelScope agent framework with tool use

agent tools alibaba open-source
#75
Micro Agent ★ 4.3k+

AI agent that writes and fixes code until tests pass

agent code tdd open-source
#76
Langroid ★ 4.0k+

Multi-agent LLM programming framework in Python

agent multi-agent python open-source
#77
CodeInterpreter API ★ 3.8k+

Open-source implementation of ChatGPT code interpreter

agent code sandbox open-source
#78
AgentBench ★ 3.5k+

Benchmark for evaluating LLMs as autonomous agents

agent benchmark evaluation open-source
#79
Devon ★ 3.5k+

Open-source alternative to Devin AI software engineer

agent code autonomous open-source
#80
Bee Agent Framework ★ 3.3k+

IBM's open-source framework for building production AI agents

agent ibm production open-source
#81
ChainForge ★ 3.0k+

Visual playground for batch-testing LLM prompts and chains

agent testing prompt open-source
#82
OSWorld ★ 3.0k+

Benchmark for evaluating AI agents on computer tasks

agent benchmark desktop open-source
#83
Memary ★ 2.6k+

Open-source memory layer for autonomous AI agents

agent memory autonomous open-source
#84
Griptape ★ 2.5k+

Enterprise framework for AI pipelines and agents

agent enterprise pipeline open-source
#85
Magentic ★ 2.4k+

Decorator-based interface for seamless LLM integration

agent decorator python open-source
#86
OpenAGI ★ 2.3k+

Open-source AGI research platform with task-solving agents

agent research agi open-source
#87
dstack ★ 2.2k+

Open-source platform for running AI workloads on any cloud

agent cloud infrastructure open-source
#88
Mentat ★ 2k+

AI coding assistant that coordinates edits across files

agent code multi-file open-source
#89
AutoChain ★ 1.9k+

Lightweight and extensible conversational AI agent framework

agent conversational lightweight open-source
#90
Rawdog ★ 1.8k+

CLI agent that writes and executes Python to answer queries

agent code cli open-source
#91
OpenAdapt ★ 1.6k+

AI-powered robotic process automation platform

agent rpa automation open-source
#92
WebArena ★ 1.5k+

Realistic benchmark for evaluating web navigation agents

agent benchmark web open-source
#93
AI Legion ★ 1.4k+

Multi-agent system where agents collaborate to complete tasks

agent multi-agent autonomous open-source
#94
RestGPT ★ 1.4k+

Connect LLMs to real-world RESTful APIs

agent api rest open-source
#95
ControlFlow ★ 1.4k+

Task-centric AI agent framework built on Prefect

agent task workflow open-source
#96
IX Agent Platform ★ 1.0k+

Drag-and-drop platform for building and testing AI agents

agent visual platform open-source
#97
AgentLite ★ 646

Salesforce's research-friendly lightweight agent library

agent research lightweight open-source
#98
TaskGen ★ 462

Task-based agentic framework using StrictJSON backbone

agent task json open-source
#99
Llama Agents ★ 407

Multi-agent framework built on top of LlamaIndex

agent multi-agent llamaindex open-source
#100
NPI ★ 228

Open-source platform for LLM tool-use and function calling

agent tools function-calling open-source
💡 Missing a tool? Open an issue on our GitHub repository to suggest a new ai agent for inclusion. We review submissions weekly.