SlideSense

Lid Plane is a macOS menu bar app that creates a MacBook lid-folding illusion using the laptop's hinge-angle sensor. It captures the built-in display with ScreenCaptureKit, reshapes the captured image with a Metal shader as the lid moves, and blends increasingly blurred copies using Metal Performance Shaders; the blur increases with lid movement and is stronger near the top of the display. The app can use a selected activation angle or a movement-based mode that anchors the effect after motion stops, while the underlying applications remain clickable and retain keyboard focus. It requires macOS 13 or newer, an Apple silicon MacBook, a supported lid-angle sensor, and Screen Recording permission. The effect applies only to the built-in display, pauses during closed-lid or unsupported-display states, and keeps captured frames in memory without saving or transmitting them. It is built with Swift, ScreenCaptureKit, IOKit, and Metal, and is distributed as a downloadable app for Apple silicon. The repository is licensed under GPLv3-or-later from version 0.3.2 onward; version 0.3.1 and earlier remain MIT-licensed.

MacTap is a macOS menu-bar app that turns one, two, or three knocks on a compatible MacBook chassis or the desk beneath it into keyboard shortcuts and other mapped actions. It supports left- and right-edge layouts, configurable sensitivity and actions, presets such as Daily, Coding, Capture, Media, and Focus, and per-application overrides. Tap classification runs on-device, with gesture mappings stored locally and nothing uploaded. It requires macOS 14.6 or later and a MacBook whose motion sensor is exposed as an SPU HID device, including M2-and-later models and M1 Pro, Max, or Ultra systems; some M1 models, including the original M1 Air, are unsupported. The app requires Accessibility permission for actions to send shortcuts, is distributed as a signed and notarized macOS app, and is licensed under the MIT license.

Mac Duo is a native Swift and Metal macOS app that makes desktop effects follow the position of a MacBook lid. It provides six transitions—Duo, Ghost, Roll, Shutter, Flex, and Iris—that animate the desktop around the hinge, including panel sliding, display curling, bowing, or iris-like closure. The app includes live preview, floating controls, menu-bar access, pause controls, and an option to clear the screen after the lid remains still. It runs locally without third-party runtime dependencies, accounts, analytics, or screen-content uploads; screen frames remain in memory when Screen Recording permission is enabled. It supports macOS 13 Ventura or newer on compatible Apple-silicon MacBooks, with an Intel preview for the 2019 16-inch MacBook Pro, and is distributed under the MIT license.

macTilt is a native macOS application that renders a 3D clamshell-fold animation as a MacBook lid closes. It reads the lid angle sensor and uses the live display, wallpaper, or other captured desktop content as the folding surface; the image remains fixed in space while the screen hardware moves through it, progressively blurring and fading to black. When the lid is open, the overlay is hidden and click-through, with no stated CPU or GPU activity. On Macs with a continuous lid-angle sensor, the animation follows the hinge angle directly; on machines with only a binary clamshell switch, it plays a time-based opening animation with an adjustable duration. The app uses Metal shaders, is written in Swift, supports Apple silicon and Intel Macs running macOS 14 or later, and requires Screen Recording permission to capture the desktop. It can also provide an interactive preview on desktop Macs, while external-display clamshell mode suppresses the hinge animation.

Mac Duo is a free macOS menu-bar app that recreates the iPhone Duo visual effect on compatible MacBooks. As the lid closes, it uses the built-in lid-angle sensor and ScreenCaptureKit to capture and render the live screen, while Metal applies perspective, blur, and dimming. The perspective is adjustable, and the app supports English and Simplified Chinese. It requires macOS 14 or later, a compatible built-in lid-angle sensor, and Screen Recording permission. Prebuilt downloads are provided for Apple Silicon and Intel Macs; the project can also be built with Xcode using Swift 6.0 or later. The effect applies only to the built-in display, stops when macOS sleeps, and passes clicks through to the applications underneath. The code is licensed under Apache License 2.0.