dockdoor

DockDoor is an open-source macOS utility that restores "Window Peeking" functionality to the macOS Dock, inspired by similar features in Windows and Linux. It is written in Swift and built with Xcode, and is distributed as a DMG from GitHub releases. Core capabilities described in the README: - Dock Previews: hovering over Dock icons shows previews of the open windows belonging to that application, making it easier to identify and switch between multiple windows of the same app. - Alt+Tab Switching: provides an alternative window switcher for moving between open windows. - Cmd+Tab Enhancements: extends the native macOS app switcher behavior. - Multiple layouts: several dock preview layouts and window switcher layouts are available. - Dock Locking: in multi-display setups, the Dock can be locked to a specific monitor so it does not jump between screens. - Calendar Integration: a calendar view is included in the switcher interface. - Compact List View: a list-style presentation option for windows. - Enhanced Previews: larger preview demonstrations are shown. The project positions itself as fast, lightweight and integrated with the operating system, and states that it is entirely open-source. The README notes that the free version has no paywall and that all features in the repository are free. A separate paid application, DockDoor Pro, is offered by the same developer and is described as replacing the macOS Dock entirely, with features such as live window previews with actions, spring magnification, folder fan-out, a drag-and-drop file tray with AirDrop, right-click quick actions, material options, per-display docks, and a widget marketplace. The README states DockDoor Pro costs $20 one-time for 3 Macs with no subscription and a 14-day money-back guarantee. Contributing options listed include starring the repository, reporting issues on GitHub, and helping with translations via Crowdin. The project is licensed under the GNU General Public License v3.0.