r/Applesilicon

I built a free tool to use an Intel iMac as external display for Apple Silicon MacBook — via Thunderbolt, no dongle

Apple Silicon killed Target Display Mode. TargetBridge brings it back via software.

One Thunderbolt cable, MacBook streams its screen to the iMac at up to 5K HEVC. No dongle, no subscription, free and open source.

How it works: ScreenCaptureKit captures the MacBook display → HEVC encode via VideoToolbox (GPU, not CPU) → streams over Thunderbolt Bridge IP → iMac decodes and displays fullscreen.

Requirements:

  • Apple Silicon MacBook (M1 or later) — sender
  • Intel iMac 2017 or later on macOS 14 Sonoma — receiver
  • Thunderbolt 3/4 cable

GitHub: https://github.com/swellweb/targetBridge

Pre-built apps in the releases, no Xcode needed.

https://preview.redd.it/4a8st0thgi1h1.png?width=2578&format=png&auto=webp&s=74acc8ed2f9bbfe22203b9f2f9f4d40bd1386bb3

https://preview.redd.it/29ylmpyigi1h1.png?width=3008&format=png&auto=webp&s=d6fb078b5a1547cc31c47bfec68967a329387e8e

https://preview.redd.it/2t120vrkgi1h1.png?width=2556&format=png&auto=webp&s=ed31c97a093029bd031c30b9573880b047c0c9c1

https://preview.redd.it/z8iawc1ygi1h1.png?width=536&format=png&auto=webp&s=8d1cb27f0a7a51e5886eff1fbcfbacd4201862ff

reddit.com
u/Annual_Manner_5901 — 6 days ago
▲ 2 r/Applesilicon+1 crossposts

Beta testers wanted: Rosetta Check 2.0 adds plugin scanning for Pro Tools, Logic, and Photoshop

I've been building Rosetta Check, a Mac utility that tracks which of your apps still depend on Rosetta 2. Version 2.0 extends that to plugins and components — the part most people haven't thought about yet.

It currently scans for Intel-only:

  • AAX plugins in Avid Pro Tools
  • Audio Units in Logic Pro
  • Plugins and extensions in Adobe Photoshop

With Rosetta 2 deprecation likely coming, a lot of creative professionals are going to get a nasty surprise when their plugin chain stops working. This tries to give you a heads-up before that happens.

If you use any of these apps and want to kick the tyres before the full release, here's the TestFlight link: https://rosettacheck.com/testflight

Happy to answer questions or hear what plugins/hosts you'd want added next.

u/theneiljohnson — 7 days ago