← All Tools
🚀 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
1.0M+ Total GitHub Stars
100% Open Source

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

#1
AutoGPT ★ 168k+ Featured

Autonomous AI agent platform for complex task execution

agent autonomous open-source llm MIT
#2
Dify ★ 55k+ Featured

Open-source LLM app development and orchestration platform

agent platform workflow open-source Apache-2.0
#3
Open Interpreter ★ 54k+

Autonomous agent that writes and executes code on your machine

agent code autonomous open-source AGPL-3.0
#4
GPT Engineer ★ 52k+

Describe what you want and AI builds the codebase

agent code autonomous open-source MIT
#5
n8n ★ 49k+ Featured

Low-code workflow automation with 400+ integrations and AI

automation workflow no-code open-source Sustainable Use License
#6
MetaGPT ★ 44k+

Multi-agent framework assigning roles to GPT models

agent multi-agent code open-source MIT
#7
Browser Use ★ 40k+ Featured

Let AI control a browser autonomously to complete web tasks

browser automation autonomous open-source MIT
#8
OpenHands ★ 40k+ Featured

Platform for AI software development agents

agent code autonomous open-source MIT
#9
AutoGen ★ 37k+ Featured

Microsoft's multi-agent conversation framework for LLM automation

agent multi-agent microsoft open-source MIT
#10
Cline ★ 35k+ Featured

Autonomous coding agent in VS Code with file editing and terminal

code vscode autonomous open-source Apache-2.0
#11
TaskMatrix ★ 34k+

Connect ChatGPT with AI models and APIs as tools

agent tools microsoft open-source
#12
Langflow ★ 33k+

Visual framework for building AI agents and RAG apps

agent workflow rag open-source MIT
#13
GPT Pilot ★ 32k+

AI coding assistant that builds full applications from scratch

agent code autonomous open-source
#14
Flowise ★ 32k+

Drag-and-drop UI to build LLM workflows

agent workflow no-code open-source
#15
AgentGPT ★ 31k+

Assemble and deploy autonomous AI agents in your browser

agent autonomous web open-source
#16
ChatDev ★ 25k+

Communicative agents building software as a virtual company

agent multi-agent code open-source
#17
CrewAI ★ 24k+

Framework for orchestrating role-playing AI agents

agent multi-agent framework open-source
#18
JARVIS (HuggingGPT) ★ 23k+

Connects LLMs with HuggingFace models as tool executors

agent tools microsoft open-source
#19
Agno ★ 22k+

Lightweight library for building multi-modal agents

agent multi-modal framework open-source
#20
BabyAGI ★ 20k+

Task-driven autonomous AI agent system

agent autonomous task open-source
#21
FastGPT ★ 20k+

Knowledge-based platform for building RAG and AI workflows

agent rag workflow open-source
#22
Rasa ★ 18k+

Open-source conversational AI and chatbot framework

agent chatbot nlp open-source
#23
OpenAI Swarm ★ 17k+

OpenAI's experimental multi-agent orchestration framework

agent multi-agent openai open-source
#24
Roo Code ★ 16k+

Enhanced autonomous coding agent with multi-mode support

code vscode autonomous open-source
#25
STORM ★ 16k+

Stanford system for writing Wikipedia-like articles with LLMs

agent research writing open-source
#26
GPT Researcher ★ 16k+

Autonomous agent for comprehensive online research

agent research autonomous open-source
#27
Prefect ★ 15k+

Modern workflow orchestration for data and AI pipelines

workflow orchestration automation open-source
#28
SuperAGI ★ 15k+

Open-source autonomous AI agent infrastructure

agent autonomous platform open-source
#29
Phidata ★ 15k+

Build multimodal AI agents with memory, knowledge and tools

agent multimodal knowledge open-source
#30
SmolAgents ★ 14k+

HuggingFace's lightweight library for building AI agents

agent huggingface lightweight open-source
#31
SWE-agent ★ 14k+

Agent that autonomously fixes GitHub issues in software repos

agent code autonomous open-source
#32
DB-GPT ★ 14k+

Private LLM-based database agent and RAG framework

agent database sql open-source
#33
ScrapeGraphAI ★ 14k+

Web scraping using LLM and graph logic

agent scraping web open-source
#34
Generative Agents ★ 14k+

Stanford simulation of human behavior with AI agents

agent simulation research open-source
#35
Botpress ★ 13k+

Developer-first platform for building conversational AI

agent chatbot platform open-source
#36
Letta ★ 12k+

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

agent memory stateful open-source
#37
MaxKB ★ 12k+

Open knowledge base Q&A system with RAG and agents

agent rag knowledge-base open-source
#38
Gorilla ★ 11k+

LLM connected to massive APIs for accurate function calling

agent api function-calling open-source
#39
Vercel AI SDK ★ 11k+

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

agent react streaming open-source
#40
Vanna ★ 11k+

AI-powered SQL generation and database chat

agent sql data open-source
#41
LangGraph ★ 10k+

Build stateful multi-actor LLM applications as graphs

agent graph stateful open-source
#42
UFO ★ 10k+

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

agent desktop windows microsoft
#43
Stagehand ★ 10k+

AI-powered browser automation framework with natural language

agent browser automation open-source
#44
MCP Servers ★ 9k+

Reference implementations for Model Context Protocol servers

agent mcp tools open-source
#45
Playwright MCP ★ 8k+

Microsoft MCP server for Playwright browser automation

agent browser mcp microsoft
#46
XAgent ★ 8k+

Autonomous LLM agent for solving complex tasks

agent autonomous task open-source
#47
Pydantic AI ★ 8k+

Production-grade type-safe agent framework by Pydantic

agent type-safe production open-source
#48
Sweep ★ 7k+

AI-powered GitHub assistant that turns issues into pull requests

agent code github open-source
#49
Bisheng ★ 7k+

Enterprise generative AI platform for intelligent workflows

agent enterprise workflow open-source
#50
Mage AI ★ 7k+

Modern data pipeline and ML orchestration tool

agent data pipeline open-source
#51
Voyager ★ 6k+

LLM-powered lifelong learning agent in Minecraft

agent research game open-source
#52
AppAgent ★ 6k+

Multimodal agent for smartphone app interactions

agent mobile multimodal open-source
#53
AgentScope ★ 5k+

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

agent multi-agent platform open-source
#54
AI Town ★ 5k+

Multiplayer AI simulation of agents living in a virtual town

agent simulation social open-source
#55
TaskWeaver ★ 5k+

Code-first agent framework for data analytics tasks

agent code data microsoft
#56
CAMEL ★ 5k+

Communicative agents for mind exploration

agent multi-agent research open-source
#57
LiveKit Agents ★ 5k+

Framework for building real-time voice and video AI agents

agent voice real-time open-source
#58
QAnything ★ 5k+

NetEase's local knowledge base Q&A system

agent rag local open-source
#59
Agent Service Toolkit ★ 5k+

Full toolkit for building and deploying LangGraph agents

agent langgraph deployment open-source
#60
Anthropic Quickstarts ★ 5k+

Reference implementations for Claude agents including computer use

agent claude computer-use open-source
#61
Agency Swarm ★ 4k+

Framework for creating collaborative AI agent swarms

agent swarm multi-agent open-source
#62
AgentVerse ★ 4k+

Platform for deploying multiple LLM-based agents collaboratively

agent simulation multi-agent open-source
#63
ToolBench ★ 4k+

Training and evaluating LLMs for tool use with 16000+ APIs

agent tools benchmark open-source
#64
TinyTroupe ★ 4k+

Microsoft's LLM-powered multiagent persona simulation

agent simulation personas microsoft
#65
R2R ★ 4k+

Production-ready RAG framework with knowledge graph support

agent rag knowledge-graph open-source
#66
CodeInterpreter API ★ 4k+

Open-source implementation of ChatGPT code interpreter

agent code sandbox open-source
#67
Micro Agent ★ 4k+

AI agent that writes and fixes code until tests pass

agent code tdd open-source
#68
Spring AI ★ 4k+

Spring framework for Java AI applications and agents

agent java framework open-source
#69
Multi-Agent Orchestrator ★ 4k+

AWS framework for orchestrating multiple AI agents

agent orchestration aws open-source
#70
dstack ★ 4k+

Open-source platform for running AI workloads on any cloud

agent cloud infrastructure open-source
#71
Devon ★ 3k+

Open-source alternative to Devin AI software engineer

agent code autonomous open-source
#72
Rivet ★ 3k+

Visual AI programming environment for building LLM pipelines

agent visual ide open-source
#73
OpenAgents ★ 3k+

Open platform for hosting and using language agents

agent platform open-source research
#74
ModelScope Agent ★ 3k+

Alibaba's ModelScope agent framework with tool use

agent tools alibaba open-source
#75
Rawdog ★ 2k+

CLI agent that writes and executes Python to answer queries

agent code cli open-source
#76
AgentOps ★ 2k+

Python SDK for AI agent observability and testing

agent observability monitoring open-source
#77
OpenAGI ★ 2k+

Open-source AGI research platform with task-solving agents

agent research agi open-source
#78
WebArena ★ 2k+

Realistic benchmark for evaluating web navigation agents

agent benchmark web open-source
#79
OSWorld ★ 2k+

Benchmark for evaluating AI agents on computer tasks

agent benchmark desktop open-source
#80
Langroid ★ 2k+

Multi-agent LLM programming framework in Python

agent multi-agent python open-source
#81
Griptape ★ 2k+

Enterprise framework for AI pipelines and agents

agent enterprise pipeline open-source
#82
Mentat ★ 2k+

AI coding assistant that coordinates edits across files

agent code multi-file open-source
#83
AgentLite ★ 2k+

Salesforce's research-friendly lightweight agent library

agent research lightweight open-source
#84
Magentic ★ 2k+

Decorator-based interface for seamless LLM integration

agent decorator python open-source
#85
AgentBench ★ 2k+

Benchmark for evaluating LLMs as autonomous agents

agent benchmark evaluation open-source
#86
Zep ★ 2k+

Fast, scalable memory layer for AI agents and assistants

agent memory storage open-source
#87
Botasaurus ★ 2k+

Anti-detect browser framework for web scraping agents

agent scraping browser open-source
#88
ChainForge ★ 2k+

Visual playground for batch-testing LLM prompts and chains

agent testing prompt open-source
#89
Llama Agents ★ 2k+

Multi-agent framework built on top of LlamaIndex

agent multi-agent llamaindex open-source
#90
Atomic Agents ★ 1k+

Modular, composable AI agent building framework

agent modular composable open-source
#91
ControlFlow ★ 1k+

Task-centric AI agent framework built on Prefect

agent task workflow open-source
#92
OpenAdapt ★ 1k+

AI-powered robotic process automation platform

agent rpa automation open-source
#93
Memary ★ 1k+

Open-source memory layer for autonomous AI agents

agent memory autonomous open-source
#94
RestGPT ★ 1k+

Connect LLMs to real-world RESTful APIs

agent api rest open-source
#95
NPI ★ 1k+

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

agent tools function-calling open-source
#96
Bee Agent Framework ★ 1k+

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

agent ibm production open-source
#97
AI Legion ★ 1k+

Multi-agent system where agents collaborate to complete tasks

agent multi-agent autonomous open-source
#98
IX Agent Platform ★ 1k+

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

agent visual platform open-source
#99
AutoChain ★ 1k+

Lightweight and extensible conversational AI agent framework

agent conversational lightweight open-source
#100
TaskGen ★ 500+

Task-based agentic framework using StrictJSON backbone

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