// Agent frameworks & SDKs
Build agent apps
Frameworks and SDKs for building agents and LLM apps.
94 tools93 open sourcechecked 2026-10-22Compare side by side →
How to choose · start with these three
- · Prototype with big ecosystems (LangChain, CrewAI); complex flows with graph orchestration (LangGraph)
94 / 94 items
langchain langchain==1.4.7 ★ 148k The agent engineering platform. Open source SDK langgraph 1.2.14 ★ 44k Build resilient agents. Open source SDK crewAI 1.15.26 ★ 60k Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks. Open source SDK agent-native %40agent-native%2Ftoolkit%400.214.0 ★ 7.5k Framework for building agent-native applications. Open source SDK nanobot ★ 49k Ultra-lightweight self-hosted personal AI agent framework. Open source PythonWeb CopilotKit ★ 38k Frontend stack for agents and generative UI in React and more. Open source SDK eliza archive%2Fclosed-pr-33944-20261005 ★ 20k Open-source agentic operating system. Open source TypeScript agent-zero ★ 20k Agent Zero AI framework. Open source Python json-render ★ 19k The Generative UI framework. Open source SDK substrate ★ 5.7k Agent Substrate: the core system. Open source runtime eino v0.9.22 ★ 13k Ultimate LLM/AI application development framework in Go. Open source Go GenericAgent ★ 14k Self-evolving agent that grows a skill tree from a small seed. Open source Python openui ★ 13k Open standard for generative UI. Open source SDK PocketFlow ★ 11k 100-line LLM framework — let agents build agents. Open source Python PraisonAI ★ 9.3k Hire a 24/7 AI workforce — multi-agent framework. Open source Python copilot-sdk v1.0.25-unstable.39668197943.gc332e3b ★ 11k Multi-platform SDK for integrating GitHub Copilot Agent. Open source SDK AutoAgent ★ 9.8k Fully automated zero-code LLM agent framework. Open source Python embabel-agent ★ 4.5k JVM agent framework for predictable fault-tolerant agents. Open source JVM open-multi-agent ★ 7.0k TypeScript multi-agent framework that runs in your own environment. Open source TypeScript open-agents ★ 5.8k Open-source template for building cloud agents. Open source cloud ruby_llm ★ 4.5k Ruby-native AI framework for chats, agents, tools, images, audio and video. Open source Ruby koog ★ 4.6k JVM framework for predictable fault-tolerant agents. Open source JVM LazyLLM ★ 3.9k Easiest way to build multi-agent LLM applications. Open source Python AutoGPT autogpt-platform-beta-v0.8.3 ★ 188k AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters. Open source SDKAPI deer-flow v2.1.0 ★ 84k An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours. Open source SDKAPI Ruflo v3.59.13 ★ 78k An agent meta-harness for Claude Code and Codex: installs as Claude Code plugins or an MCP server, routes work to multi-agent swarms with cross-session memory, vector retrieval and self-learning routing, plus a terminal console (npx ruflo tui). The README lists 314 MCP tools; mods run with your account permissions, so review before installing Open source MetaGPT v0.8.2 ★ 71k 🌟 The Multi-Agent Framework: First AI Software Company, Towards Natural Language Programming Open source SDK autogen python-v0.7.5 ★ 62k A programming framework for agentic AI Open source SDK OpenManus v0.3.0 ★ 59k No fortress, purely open ground. OpenManus is Coming. Open source CLISDK llama_index v0.14.25 ★ 53k LlamaIndex is the document processing platform for AI Open source SDK agno v3.1.2 ★ 43k Build, run, and manage agent platforms. Open source SDK langextract v1.7.1 ★ 39k A Python library for extracting structured information from unstructured text using LLMs with precise source grounding and interactive visualization. Open source SDK dspy 3.4.0 ★ 39k DSPy: The framework for programming—not prompting—language models Open source SDK ChatDev v2.2.0 ★ 35k ChatDev 2.0: Dev All through LLM-powered Multi-Agent Collaboration Open source SDK agentscope v2.0.9 ★ 34k Build and run agents you can see, understand and trust. Open source SDK openai-python v3.36.0 ★ 32k The official Python library for the OpenAI API Open source SDK deepagents deepagents==0.7.30 ★ 30k The batteries-included agent harness. Open source SDK gpt-researcher v3.7.0 ★ 30k An autonomous agent that conducts deep research on any data using any LLM providers Open source SDKAPI openai-agents-python v0.23.1 ★ 30k A lightweight, powerful framework for multi-agent workflows Open source SDK smolagents v1.26.0 ★ 30k 🤗 smolagents: a barebones library for agents that think in code. Open source SDK mastra @mastra/[email protected] ★ 29k Mastra is the modern TypeScript framework for AI-powered applications and agents. Open source SDK semantic-kernel dotnet-1.81.0 ★ 29k Integrate cutting-edge LLM technology quickly and easily into your apps Open source SDK Vercel AI SDK [email protected] ★ 27k The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents Open source SDK haystack v3.4.1 ★ 27k 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. Open source SDK babyagi v0.1.0 ★ 22k Open source SDK swarm ★ 22k OpenAI's lightweight multi-agent orchestration example. The official README says it is replaced by the OpenAI Agents SDK; migrate for production. Open source SDK adk-python v2.11.0 ★ 22k An open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control. Open source SDK guidance 0.3.2 ★ 22k A guidance language for controlling large language models. Open source SDK rasa 3.6.21 ★ 21k 💬 Open source machine learning framework to automate text- and voice-based conversations: NLU, dialogue management, connect to Slack, Facebook, and more - Create chatbots and voice assistants Open source SDKCLI pydantic-ai v2.54.0 ★ 21k How Python does AI. Agents, realtime voice, image generation, embeddings. Every model, every interface, typed end to end. Open source SDK owl ★ 20k 🦉 OWL: Optimized Workforce Learning for General Multi-Agent Assistance in Real-World Task Automation Open source SDK langchainjs [email protected] ★ 18k The agent engineering platform Open source SDK camel v0.2.90 ★ 18k 🐫 CAMEL: The first and the best multi-agent framework. Finding the Scaling Law of Agents. https://www.camel-ai.org Open source SDK Qwen-Agent v0.0.26 ★ 17k Agent framework and applications built upon Qwen>=3.0, featuring Function Calling, MCP, Code Interpreter, RAG, Chrome extension, etc. Open source SDK pipecat v1.12.0 ★ 17k Open Source framework for voice agents, multimodal apps, and realtime AI. Maintained by Daily and the community. Open source SDK outlines 1.3.3 ★ 16k Structured Outputs Open source SDK botpress chat-2026-08-12_13-16-40 ★ 15k The open-source hub to build & deploy GPT/LLM Agents ⚡️ Open source API agents [email protected] ★ 15k A framework for building realtime voice AI agents 🤖🎙️📹 Open source SDK AI-Scientist ★ 15k The AI Scientist: Towards Fully Automated Open-Ended Scientific Discovery 🧑🔬 Open source CLI microsoft/agent-framework python-1.21.0 ★ 14k A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET. Open source SDK instructor v1.17.0 ★ 14k structured outputs for llms Open source SDK pipedream v0.10.1 ★ 12k Connect APIs, remarkably fast. Free for developers. Open source APIMCP humanlayer nightly-0.1.0-nightly-20260227142452 ★ 12k The best way to get AI coding agents to solve hard problems in complex codebases. Open source SDK openai-node v7.41.0 ★ 11k Official JavaScript / TypeScript library for the OpenAI API Open source SDK voltagent [email protected] ★ 11k AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework Open source SDK ollama-python v0.6.3 ★ 11k Ollama Python library Open source SDK magentic-ui v0.2.1 ★ 10k MagenticLite is an experimental agent that works across the browser and local file system Open source API baml baml-language-0.21.1-nightly.20261008.a ★ 9.4k The programming language for agents Open source SDKCLI harness-sdk typescript/v1.22.0 ★ 8.9k Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud. Open source SDK adk-go v1.8.0 ★ 8.9k An open-source, code-first Go toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control. Open source SDK mcp-agent v0.2.6 ★ 8.6k Build effective agents using Model Context Protocol and simple workflow patterns Open source SDK deep-searcher v0.0.2 ★ 8.3k Open Source Deep Research Alternative to Reason and Search on Private Data. Written in Python. Open source SDKCLI claude-agent-sdk-python v0.2.171 ★ 8.3k Open source SDK Upsonic v0.77.3 ★ 8.0k Build autonomous AI agents in Python. Open source SDK agent-squad typescript_1.1.5 ★ 7.8k Flexible and powerful framework for managing multiple AI agents and handling complex conversations Open source SDK swarms 6.8.1 ★ 7.3k The Enterprise-Grade Multi-Agent Orchestration Framework. Website: https://swarms.ai Open source SDK superagent node-v0.0.9 ★ 6.8k Superagent protects your AI applications against prompt injections, data leaks, and harmful outputs. Embed safety directly into your app and prove compliance to your customers. Open source SDKAPI genkit vertexai-v1.43.0 ★ 6.5k Open-source framework for building agentic apps in JavaScript, Go, Dart, and Python, built and used in production by Google Open source SDK marvin v3.2.7 ★ 6.2k an ambient intelligence library Open source SDK agents [email protected] ★ 5.9k Build and deploy AI Agents on Cloudflare Open source SDK node-DeepResearch v1.4.0 ★ 5.2k Keep searching, reading webpages, reasoning until it finds the answer (or exceeding the token budget) Open source API ag2 v1.2.1 ★ 5.0k AG2 (formerly AutoGen): The Open-Source AgentOS.Join us at: https://discord.gg/sNGSwQME3x Open source SDK ms-agent v1.6.0 ★ 4.4k MS-Agent: a lightweight framework to empower agentic execution of complex tasks Open source SDK langroid 0.69.2 ★ 4.1k Harness LLMs with Multi-Agent Programming Open source SDK python-genai v2.29.0 ★ 4.0k Google Gen AI Python SDK provides an interface for developers to integrate Google's generative models into their Python applications. Open source SDK anthropic-sdk-python v2.1.0 ★ 4.0k Open source SDK openai-agents-js v0.20.0 ★ 3.9k A lightweight, powerful framework for multi-agent workflows and voice agents Open source SDK beeai-framework python_v0.1.85 ★ 3.4k Build production-ready AI agents in both Python and Typescript. Open source SDK langgraphjs @langchain/[email protected] ★ 3.4k Framework to build resilient language agents as graphs. Open source SDK griptape v1.13.0 ★ 2.6k Modular Python framework for AI agents and workflows with chain-of-thought reasoning, tools, and memory. Open source SDK claude-agent-sdk-typescript v0.3.307 ★ 1.8k Closed / commercial SDK adk-java v1.13.0 ★ 1.8k An open-source, code-first Java toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control. Open source SDK arcade-mcp v2.0.9 ★ 1.0k MCP Server Framework and Tool Development library for building custom capabilities into agents. Open source SDKMCP agent-kit [email protected] ★ 950 AgentKit: Build multi-agent networks in TypeScript with deterministic routing and rich tooling via MCP. Open source SDK
About this data
- Default order is “recommended”: editorial picks first, then by popularity; general-purpose developer software and archived projects are listed last.
- Data checked 2026-10-22. Official links only. JSON API