Rill Browser Rill is a free, WebKit-based Mac browser built so Claude Code and Codex agents work beside you while you browse. Press ⌘E on any page to turn what you are looking at into a task; Rill finds the matching local project from your agent history, passes the context, and the agent starts work while you keep reading. Tabs are grouped by theme, browsing history becomes searchable days, and every agent project appears on one map. It runs on the Claude or Codex plan you already have, with no extra subscription.