Roar

Roar is a free, open-source browser for Mac built for agents that need to work in a real browser. Key features: • Built-in MCP server that connects the agent you already use • Each agent gets its own tabs, wrapped in mint so you can watch them work • Groups its tabs and names them on request • Asks you with buttons before it takes important steps • Stays out of spaces you block • One click cuts the agent off. Roar lets your agent use the same browser you do, already logged in, instead of a separate hidden environment. Its sidebar keeps every agent session visible, so you can see which tabs it opened and what it is doing at any moment. You stay in control: the agent can ask before it acts, and you can take over any tab whenever you choose. Roar runs on macOS 13 or later on Apple Silicon or Intel (Intel from version 1.3) and requires no Node.js. It is built for developers, researchers, and power users who already use Claude Code, Cursor, or Codex and want their agent to work inside their everyday browser with full visibility and control.