MacDisplay alternatives
MacDisplay allows a second Mac running macOS 11 or later to function as an extended display for another Mac with macOS 12.3 or newer. It provides an independent workspace with native resolution and a real cursor, connecting via Thunderbolt, Ethernet, or Wi-Fi with automatic failover. The app offers a freemium model with a free version limited to 10-minute sessions and a one-time purchase for full access.