What are the best Python autonomous agents?

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

Are these Python autonomous agents open source and free?

Yes — every project on this page is open source and written primarily in Python. 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.

Why choose Python autonomous agents specifically?

Staying in your team's primary language — Python — makes self-hosting, extending, and debugging far easier, because you can read and modify the source directly instead of treating it as a black box.

Open source · Python

Best Python autonomous agents

The open-source autonomous agents written in Python, from the Agent Search Engine index — ranked by real maintained adoption (GitHub stars and recent commit activity), never by sponsorship. Every project here is Python-first, self-hostable, and free to run; the trade-off is you host and maintain it yourself.

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

01AutoGPTAgentAutoGPT 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…Python · 185k stars · Jul 2026Python · 185k stars · Jul 2026Verified · Active 02browser-useAgentMake websites accessible for AI agents. Automate tasks online with ease.Python · 102k stars · MIT · Jul 2026Python · 102k stars · MITVerified · Active 03deer-flowAgentAn open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, sub…Python · 76k stars · MIT · Jul 2026Python · 76k stars · MITVerified · Active 04CowAgentAgentOpen-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-model, mu…Python · 46k stars · MIT · Jul 2026Python · 46k stars · MITVerified · Active 05nanobotAgentLightweight, open-source AI agent for your tools, chats, and workflows.Python · 45k stars · MIT · Jul 2026Python · 45k stars · MITVerified · Active 06agnoAgentBuild, run, and manage agent platforms.Python · 41k stars · Apache-2.0 · Jul 2026Python · 41k stars · Apache-2.0Verified · Active 07wshobson/agentsPlatformMulti-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLIPython · 37k stars · MIT · Jun 2026Python · 37k stars · MITVerified · Active 08agenticSeekAgentFully 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…Python · 27k stars · GPL-3.0 · Jul 2026Python · 27k stars · GPL-3.0Verified · Active 09agentic_securityAgentAgentic LLM Vulnerability Scanner / AI red teaming kitPython · 1.9k stars · Apache-2.0 · Jun 2026Python · 1.9k stars · Apache-2.0Verified · Active

Frequently asked

What are the best Python autonomous agents?: The Python projects listed below, ranked by maintained adoption — GitHub stars plus recent commit activity — so you see what's genuinely used and still maintained, not abandoned.
Are these Python autonomous agents open source and free?: Yes — every project on this page is open source and written primarily in Python. 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.
Why choose Python autonomous agents specifically?: Staying in your team's primary language — Python — makes self-hosting, extending, and debugging far easier, because you can read and modify the source directly instead of treating it as a black box.