Open ChatGPT Atlas is a browser extension and Electron desktop application that leverages AI agents to autonomously navigate, interact with, and extract information from web pages. It utilizes Gemini 2.5 Computer Use for visual browser automation capabilities including screenshot analysis, click simulation, text input, and page navigation. The system includes a tool router mode powered by Composio for accessing external services like Gmail, Slack, and GitHub, enabling agents to complete multi-step web-based workflows without backend infrastructure.