Roo Code

Roo Code is the open-source AI coding assistant for VS Code, designed around specialized agent modes (Code, Architect, Debug) that stay on task rather than trying to do everything from a single general-purpose assistant. Originally forked from Cline and now developed independently by Roo Code Inc., the project has grown into one of the most-installed open-source AI coding extensions with 23,800+ GitHub stars and 1.56 million installs as of mid-2025. Pricing is fully free and open-source, with users paying only for AI inference through their chosen provider via BYOK (Bring Your Own Key). Roo Code supports Claude, OpenAI GPT, Google Gemini, DeepSeek, local models via Ollama, and any OpenAI-compatible API endpoint. There's no Roo Code Inc. subscription tier — the company's revenue model focuses on enterprise services and team support rather than per-seat licensing, which keeps the core product permanently free. Roo Code's differentiation versus Cline, Aider, and Continue is the specialized mode architecture: rather than treating AI as a single chat interface, Roo Code provides distinct modes optimized for different developer workflows. Code mode focuses on implementation tasks, Architect mode focuses on system design and high-level planning, Debug mode focuses on diagnosing and fixing issues. Each mode has tailored prompts, tool permissions, and context-handling strategies, which produces materially better results than general-purpose AI assistants for specific workflow types. The platform is fully model-agnostic, letting developers use the most cost-effective model for each task — typically Claude for complex reasoning, GPT for general work, DeepSeek for cost-sensitive operations, and local models for privacy-sensitive tasks. Roo Code is open-source on GitHub under permissive licensing with active community contribution. The project supports VS Code as the primary host environment with broad community plugin development.