Deskreen

Deskreen is a desktop application that lets a computer broadcast its display to any device that can run a web browser, effectively turning phones, tablets, other computers, or smart TVs into additional screens. It works over Wi‑Fi, using a virtual display adapter to create a secondary monitor and supporting both full‑screen mirroring and the sharing of a single application window. The software includes features such as teleprompter mode, multiple simultaneous device connections, and adjustable video quality with automatic adaptation.

The tool is aimed at users who need extra screen real‑ without purchasing hardware, such as remote workers, presenters, video creators, and anyone who wants to extend their workspace across existing devices. Its design emphasizes ease of use, requiring only three steps to establish a connection, and it incorporates end‑to‑end encryption for secure transmission.

Deskreen is open source, runs on macOS, and is classified as stable. It offers a lightweight, cable‑free solution for screen sharing and secondary display functionality, with the ability to control picture quality and support several devices at once.