DockDoor

DockDoor is a free utility for macOS that enhances window management by bringing Windows-style functionality to the Mac. It adds two key features: live previews when hovering over dock icons, showing thumbnails of all open windows for that application, and an Alt+Tab window switcher that displays previews of all open windows across applications. The tool integrates directly with macOS, providing a familiar switching experience for users who work with multiple windows simultaneously.

The application offers extensive customization options, allowing users to adjust dock preview layouts, window switcher styles, and keyboard shortcuts. It includes practical features like media controls with synchronized lyrics for Spotify and Apple Music, calendar integration that shows daily events when hovering over the Calendar app, and trackpad gestures for minimizing or maximizing windows. All processing happens locally on your Mac with no data collection or cloud synchronization, prioritizing user privacy.

DockDoor is particularly useful for professionals who frequently switch between multiple applications or work with many windows open at once. Developers, designers, writers, and anyone who values efficient multitasking will benefit from the visual window management. The tool helps users quickly identify and switch to the specific window they need without hunting through multiple applications, making it especially valuable for complex workflows involving browsers with many tabs or creative software with multiple project windows.