Open Source AI Agents
Discover 406 open source AI Agents repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. AI Agents projects here are most often combined with Python, Developer Tools and MCP. Last updated October 4, 2026.
406 repositories · updated October 4, 2026
AI-Scientist-v2: Automate Scientific Experiments and Paper Drafts
AI-Scientist-v2 uses LLM agents and tree search to propose research ideas, run experiments, analyze results, and draft papers. It is aimed at researchers exploring open-ended machine learning questions who can provide model APIs and a controlled compute environment.
UI-TARS-desktop: Control Computers with a Multimodal AI Agent
UI-TARS-desktop is a desktop GUI agent that uses vision-language models to operate computers through natural-language instructions. It offers local and remote computer and browser operators for users building or exploring AI-driven automation.
mongodb-mcp-server: Connect AI Agents to MongoDB
A TypeScript Model Context Protocol server that lets AI agents query MongoDB databases and manage MongoDB Atlas resources. It suits developers who want database access through MCP, with read-only mode available for safer exploration.
langwatch: Test and Monitor LLM Applications and AI Agents
LangWatch helps teams evaluate, test, and monitor LLM applications and AI agents in production. It combines observability, simulation testing, prompt management, an AI gateway, and governance, with cloud and self-hosted options.
AgentStack: Scaffold AI Agent Projects
AgentStack is a Python CLI that creates and develops AI agent projects with supported frameworks, providers, and tools preconfigured. It suits developers who want a practical starting point without committing to a low-code platform or fixed stack.
index: Automate Complex Tasks in a Web Browser
Index is a Python browser agent that uses reasoning-capable language models to carry out multi-step web tasks and return structured results. It offers a CLI, a Python interface, and a serverless API, but the repository is archived.
ai_agents_az: Explore n8n AI Agent Workflows
A collection of n8n workflow templates accompanying AI Agents A-Z episodes. It helps n8n users study and adapt automations for research, content creation, social media, and other AI agent tasks.
asta-paper-finder: Find Papers from Natural-Language Queries
PaperFinder is a single-query research agent that finds papers using content and metadata criteria, then judges and ranks results. This frozen evaluation release is suited to reproducing results or running the core workflow locally, rather than replacing the live service.
utcp-specification: Standardize AI Tool Discovery and Calls
UTCP is a protocol specification for discovering and calling tools across different providers and transports. It helps AI systems and other clients use a consistent interface for tools exposed over HTTP, WebSocket, CLI, and other protocols.
harness-sdk: Build and Run AI Agents in Python and TypeScript
Strands Agents provides Python and TypeScript tools for building AI agents, from a ready-made harness to a customizable agent SDK. It suits teams that want model flexibility and control over agent execution without a hosted control plane.
mcp-atlassian: Connect AI Assistants to Jira and Confluence
An MCP server that lets AI assistants search and work with Jira issues and Confluence pages. It supports Atlassian Cloud and Server/Data Center deployments, making it useful for teams that want these workflows available through MCP-compatible clients.
gpt-pilot: Build Apps with an AI Developer Assistant
GPT Pilot is a Python tool that works with a developer to plan, code, review, and debug applications step by step. The repository is no longer maintained and includes a security notice about a removed credential-stealing payload.