Run Claude Code, Codex, Gemini CLI or OpenCode in many projects from one window. Each project gets its own terminals, tabs and split panes; a live Grid shows them all, and every pane tells you honestly whether its agent is working, waiting for you, done or failed. ⌘J jumps to the agent that needs you. Built-in editor with your language servers, document viewer and change review. One small Rust binary: no Electron, opens in 0.2 s. Free and open source (MIT).