Tiling Shell is a GNOME Shell extension that provides advanced, customizable window tiling and management. It replaces the default window snapping with a flexible layout system where users can define custom tile arrangements (via a built-in editor or JSON files), use snap assist for precise placement, enable edge tiling with multiple modes (default, adaptive, granular), and auto-tile new windows. The extension also adds a panel indicator, keyboard shortcuts, window border customization with dynamic corner radius detection, and a window suggestions feature that proposes layouts after tiling. The architecture follows a manager pattern: per-monitor subsystems (TilingManager, ResizeManager, WindowBorderManager, RaiseTogetherManager) are created and destroyed by the main extension lifecycle. Communication is event-driven via GObject signals, with a central GlobalState singleton and a Settings wrapper around GSettings. The codebase is written in TypeScript, compiled for GJS, and supports GNOME Shell versions 42–50 on both X11 and Wayland. It includes a complex build pipeline that produces separate outputs for modern and legacy GNOME versions, along with full internationalization (10+ languages). While the extension is actively maintained and feature-rich, it relies heavily on private GNOME Shell APIs and contains version-specific workarounds, which introduces maintenance risk as the shell evolves.