Duet Display

Duet Display is a cross-platform application that connects macOS, Windows, iOS, and Android devices so they can be used together from anywhere. It addresses the need for additional screen space, remote access to a computer, and shared input across machines without requiring extra hardware such as dongles or adapters.

Duet offers several modes: Extend turns a device into a second display, Mirror shares a screen or uses a device as a graphics tablet, and Remote Desktop provides access to a Mac, PC, iOS, or Android device over the internet. Additional capabilities include using a desktop as a second monitor in Target Display Mode, sharing a single keyboard, mouse, or trackpad across two computers, casting and controlling an iPhone or iPad from a Mac or PC, using a tablet as a portable or headless primary display, and drawing on a device as a graphics tablet. The software runs on macOS 10.9 and later, Windows 10 and later, iOS, and Android, and uses 256-bit end-to-end encryption.

Duet is aimed at individuals and organizations that work across multiple devices, including travelers and remote workers. The product is available through desktop and mobile apps, with enterprise partnerships and licensing offered separately.