Skip to the card

Card 497 of 9982026-08-21 issue

Observed arrival · 2026-08-21

MacDisplay Turns an Old Mac Into a Second Screen

macdisplay.app Observed source
Editorial interest 83/100 Selection signal · not a rating of the site

MacDisplay uses Thunderbolt, Ethernet, or Wi-Fi to turn another Mac into an extended display, without extra hardware, an account, or cloud services.

Landing page captured for the 2026-08-21 issue.

Why it surfaced

This is a sharply defined answer to a familiar problem: the unused iMac or spare MacBook becomes useful again. The 10 MB app runs on macOS 11 or later, can be launched from a USB stick, and costs €29.99 plus VAT once rather than requiring a subscription.

MacDisplay uses Thunderbolt, Ethernet, or Wi-Fi to turn another Mac into an extended display, without extra hardware, an account, or cloud services.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
$PaidCommerce or pricing visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use

One card from the complete issue

The Missing Knob Bulletin

359,677 arrived 1,000 judged 998 catalogued Enter the complete issue
macdisplay.app

Landing page observed 2026-08-21. The live site may have changed.