What are the best open-source autonomous agents?

The projects listed below, ranked by maintained adoption — GitHub stars plus recent activity — so you see what's genuinely used and still maintained, not abandoned.

Are open-source autonomous agents free?

The software is free to run and self-host. You still pay for the infrastructure you run it on and any model or API usage it makes.

Open-source or commercial autonomous agents — which should I choose?

Pick open source for control, privacy, and no lock-in when you're happy to host and maintain it; pick a commercial product for a managed, supported experience. You can compare both in the full autonomous agents category.

Open source · self-hostable

Best open-source autonomous agents

The open-source autonomous agents in the index — self-hostable, inspectable, and free to run. Ranked by real maintained adoption (GitHub stars and recent commit activity), never by sponsorship. Open source buys you control, privacy, and no vendor lock-in; the trade-off is that you host and maintain it yourself. Right now it's led by Hermes Agent (250k stars), with AutoGPT and ragflow close behind. Rankings shift as projects gain stars and ship commits.

19 open-source records · all autonomous agents · more best-of lists · how we rank

Hermes AgentAgentNous Research's self-improving AI agent that builds skills from experience and remembers you across sessions.Open sourcePython · MITVerified · Active 250kGitHub stars AutoGPTAgentAutoGPT 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 sourcePythonVerified · Active 188kGitHub stars ragflowPlatformRAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMsOpen sourceGo · Apache-2.0Verified · Active 91kGitHub stars deer-flowAgentAn open-source long-horizon SuperAgent harness that researches, codes, and creates.Open sourcePython · MITVerified · Active 83kGitHub stars anything-llmPlatformStop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experienceOpen sourceJavaScript · MITVerified · Active 67kGitHub stars gooseAgentan open source, extensible AI agent that goes beyond code suggestions - install, execute, edit, and test with any LLMOpen sourceRust · Apache-2.0Verified · Active 55kGitHub stars nanobotAgentLightweight, open-source AI agent for your tools, chats, and workflows.Open sourcePython · MITVerified · Active 49kGitHub stars CowAgentAgentOpen-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-model, multi-channel. Lightweight, extensible, one-line install.Open sourcePython · MITVerified · Active 47kGitHub stars agnoAgentBuild, run, and manage agent platforms.Open sourcePython · Apache-2.0Verified · Active 42kGitHub stars wshobson/agentsPlatformMulti-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLIOpen sourcePython · MITVerified · Active 40kGitHub stars agenticSeekAgentFully 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.Open sourcePython · GPL-3.0Verified · Active 27kGitHub stars pentagiAgentFully autonomous AI Agents system capable of performing complex penetration testing tasksOpen sourceGo · MITVerified · Active 25kGitHub stars

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eigentAgentEigent: The Open Source Cowork Desktop to Unlock Your Exceptional Productivity. Local and Free Alternative to Claude Cowork.Open sourceTypeScript · Apache-2.0Verified · Active 15kGitHub stars LobsterAIAgentOpen-source, desktop-grade AI agent that gets real work done — data analysis, slides, docs, video & web research.Open sourceTypeScript · MITVerified · Active 6.1kGitHub stars moltisAgentA secure persistent personal agent server in Rust. One binary, sandboxed execution, multi-provider LLMs, voice, memory, Telegram, WhatsApp, Discord, Teams, and MCP tools.Open sourceRust · MITVerified · Active 2.9kGitHub stars codelAgentFully autonomous AI Agent that can perform complicated tasks and projects using terminal, browser, and editor.Open sourceTypeScript · AGPL-3.0Verified 2.5kGitHub stars agiAgentThe first distributed AGI system. Thousands of autonomous AI agents collaboratively train models, share experiments via P2P gossip, and push breakthroughs here. Fully peer-to-peer.Open sourceMITVerified · Active 2.1kGitHub stars agentic_securityAgentAgentic LLM Vulnerability Scanner / AI red teaming kitOpen sourcePython · Apache-2.0Verified · Active 2.0kGitHub stars zeroshotAgentYour autonomous engineering team in a CLI. The agent loop produces senior-level code that you can actually trust in prod because of non-negotiable feedback from independent reviewers.Open sourceJavaScript · MITVerified · Active 1.9kGitHub stars

Frequently asked

What are the best open-source autonomous agents?: The projects listed below, ranked by maintained adoption — GitHub stars plus recent activity — so you see what's genuinely used and still maintained, not abandoned.
Are open-source autonomous agents free?: The software is free to run and self-host. You still pay for the infrastructure you run it on and any model or API usage it makes.
Open-source or commercial autonomous agents — which should I choose?: Pick open source for control, privacy, and no lock-in when you're happy to host and maintain it; pick a commercial product for a managed, supported experience. You can compare both in the full autonomous agents category.