Arty

Arty is a native macOS terminal prototype with an Arc-style sidebar, persistent sessions, and a GPU-backed renderer.

Current status

The project currently includes:

• AppKit windowing and sidebar session management
• Persistent active and minimized terminal sessions
• Folder-based session naming with duplicate suffixes
• Collapsible sidebar
• libvterm-backed terminal parsing
• Metal-based terminal rendering
• Swift package targets for the app, renderer, terminal core, and tests

The long-term PRD also mentions tmux integration, but the current implementation uses a direct PTY backend.

Requirements

• macOS 15 or newer
• Xcode 16 / Swift 6.2 toolchain

Build

swift build

Run

swift run ArtyApp

Test

swift test

Project layout

Sources/
  ArtyApp/         AppKit app shell and sidebar UI
  Renderer/        Metal terminal renderer
  TerminalCore/    Session management, PTY backend, vterm parser
  CTerminalBridge/ C bridge around libvterm and process helpers
Tests/
  TerminalCoreTests/
vendor/
  libvterm/

Notes

• Closing a session in the sidebar minimizes it instead of killing it.
• Minimized sessions keep running and can be restored later.
• Session labels are derived from the current working directory.
• Duplicate sessions in the same directory are shown as name (2), name (3), and so on.

Roadmap

• tmux-backed persistence
• richer session metadata
• improved terminal interactions and polish

Reference

• Product notes: PRD.md