Best Open Source agents Libraries
A curated list of the most popular GitHub repositories tagged with agents. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1langflow-ai/langflow
Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
#2langchain-ai/langchain
🦜🔗 The platform for reliable agents.
#3Shubhamsaboo/awesome-llm-apps
Collection of awesome LLM apps with AI Agents and RAG using OpenAI, Anthropic, Gemini and opensource models.
#4dair-ai/Prompt-Engineering-Guide
🐙 Guides, papers, lessons, notebooks and resources for prompt engineering, context engineering, RAG, and AI Agents.
#5microsoft/autogen
A programming framework for agentic AI
#6FlowiseAI/Flowise
Build AI Agents, Visually
#7mem0ai/mem0
Universal memory layer for AI Agents
#8run-llama/llama_index
LlamaIndex is the leading document agent and OCR platform
#9crewAIInc/crewAI
Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks.
#10mindsdb/mindsdb
Federated Query Engine for AI - The only MCP Server you'll ever need
#11agno-agi/agno
The programming language for agentic software. Build, run, and manage multi-agent systems at scale.
#12reworkd/AgentGPT
🤖 Assemble, configure, and deploy autonomous AI Agents in your browser.
#13patchy631/ai-engineering-hub
In-depth tutorials on LLMs, RAGs and real-world AI agent applications.
#14wshobson/agents
Intelligent automation and multi-agent orchestration for Claude Code
#15CopilotKit/CopilotKit
The Frontend for Agents & Generative UI. React + Angular
#16ComposioHQ/composio
Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.
#17simstudioai/sim
Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.
#18huggingface/agents-course
This repository contains the Hugging Face Agents Course.
#19Fosowl/agenticSeek
Fully Local Manus AI. No APIs, No $200 monthly bills. Enjoy an autonomous agent that thinks, browses the web, and code for the sole cost of electricity. 🔔 Official updates only via twitter @Martin993886460 (Beware of fake account)
#20langchain-ai/langgraph
Build resilient language agents as graphs.
#21mlflow/mlflow
The open source developer platform to build AI agents and models with confidence. Enhance your AI applications with end-to-end tracking, observability, and evaluations, all in one integrated platform.
#22deepset-ai/haystack
Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.
#23PrefectHQ/fastmcp
🚀 The fast, Pythonic way to build MCP servers and clients.
#24getzep/graphiti
Build Real-Time Knowledge Graphs for AI Agents
#25a2aproject/A2A
Agent2Agent (A2A) is an open protocol enabling communication and interoperability between opaque agentic applications.
#26mastra-ai/mastra
From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.
#27browserbase/stagehand
The AI Browser Automation Framework
#28usestrix/strix
Open-source AI hackers to find and fix your app’s vulnerabilities.
#29NirDiamant/GenAI_Agents
This repository provides tutorials and implementations for various Generative AI Agent techniques, from basic to advanced. It serves as a comprehensive guide for building intelligent, interactive AI systems.
#30cube-js/cube
📊 Cube Core is open-source semantic layer for AI, BI and embedded analytics
#31openai/openai-agents-python
A lightweight, powerful framework for multi-agent workflows
#32humanlayer/12-factor-agents
What are the principles we can use to build LLM-powered software that is actually good enough to put in the hands of production customers?
#33eosphoros-ai/DB-GPT
AI Native Data App Development framework with AWEL(Agentic Workflow Expression Language) and Agents
#34transitive-bullshit/agentic
Your API ⇒ Paid MCP. Instantly.
#35google/adk-python
An open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.
#36arc53/DocsGPT
Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, Deep research, Document analysis, Multi-model support, and API connectivity for agents.
#37NirDiamant/agents-towards-production
This repository delivers end-to-end, code-first tutorials covering every layer of production-grade GenAI agents, guiding you from spark to scale with proven patterns and reusable blueprints for real-world launches.
#38llmware-ai/llmware
Unified framework for building enterprise RAG pipelines with small, specialized models
#39ruvnet/claude-flow
🌊 The leading agent orchestration platform for Claude. Deploy intelligent multi-agent swarms, coordinate autonomous workflows, and build conversational AI systems. Features enterprise-grade architecture, distributed swarm intelligence, RAG integration, and native Claude Code support via MCP protocol. Ranked #1 in agent-based frameworks.
#40OthmanAdi/planning-with-files
Claude Code skill implementing Manus-style persistent markdown planning — the workflow pattern behind the $2B acquisition.
#41googleapis/genai-toolbox
MCP Toolbox for Databases is an open source MCP server for databases.
#42MODSetter/SurfSense
Connect any LLM to your internal knowledge sources and chat with it in real time alongside your team. OSS alternative to NotebookLM, Perplexity, and Glean. Join our Discord: https://discord.gg/ejRNvftDp9
#43elder-plinius/CL4R1T4S
LEAKED SYSTEM PROMPTS FOR CHATGPT, GEMINI, GROK, CLAUDE, PERPLEXITY, CURSOR, DEVIN, REPLIT, AND MORE! - AI SYSTEMS TRANSPARENCY FOR ALL! 👐
#44GoogleCloudPlatform/generative-ai
Sample code and notebooks for Generative AI on Google Cloud, with Gemini on Vertex AI
#45coder/coder
Secure environments for developers and their agents
#46neuml/txtai
💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows
#47Netflix/metaflow
Build, Manage and Deploy AI/ML Systems
#48microsoft/magentic-ui
A research prototype of a human-centered web agent
#49langchain-ai/deepagents
Deep Agents is an agent harness built on langchain and langgraph. Deep Agents are equipped with a planning tool, a filesystem backend, and the ability to spawn subagents - making them well-equipped to handle complex agentic tasks.
#50humanlayer/humanlayer
The best way to get AI coding agents to solve hard problems in complex codebases.