better-cmux

Native macOS prototype for a window-first terminal manager with:

• a persistent Arc-style sidebar of windows
• per-window tabs
• long-lived terminal sessions per tab
• Bun-wrapped check, format, and dev commands for the local workflow

Requirements

• macOS
• Xcode command line tools / Swift 6 toolchain
• Bun

Run

bun install
bun run dev

Check

bun run format
bun run check

Notes

• The current draft uses SwiftTerm for live terminal sessions so we can validate the product shape quickly.
• Window, tab, and profile metadata persist to ~/Library/Application Support/better-cmux/state.json.
• Active profiles keep their windows, tabs, and working directories synced in the background and on app sleep/quit.
• Live shell process state is not restored on relaunch yet.