Rill is a free Mac browser that integrates Claude Code and Codex directly into your browsing experience. You can send tasks to your coding agent from any webpage without switching to a terminal, and agents work in the background while you continue browsing. Rill automatically sorts tabs by project context and routes requests to the correct Claude Code or Codex project based on your history. No new subscription or API keys are required — it runs on the Claude Code or Codex plan you already have.