Roo Code

Roo Code is an open-source VS Code plugin that functions as an AI agent for reading, writing, and debugging code locally . Unlike conventional code-completion tools, it is designed to understand and modify code across multiple files with execution capabilities, while keeping the developer in control through user confirmation for all changes . Its core distinction from products like Copilot lies in openness and controllability: users can freely modify its code, customize functionality, and plug in different models ranging from OpenAI and Anthropic to Google Gemini or locally deployed LLMs . The tool emphasizes holistic, cross-file understanding—capable of synchronizing updates across multiple files during large-scale refactoring rather than generating functions in isolation .