UltraViewer for macOS: why there isn't one, and what to use instead

You know UltraViewer from the office, now you need to reach the Mac at home, and you go looking for a macOS build. Short answer: there isn't one, and no unofficial build is worth trusting either. Here is the real situation, then a way to actually do what you need.

Checked, not assumed

On 28 August 2026 the official download page at ultraviewer.net offered exactly one file: UltraViewer_setup_6.6.133_vi.exe — a Windows installer. The home page states support for "all Windows operating systems" and lists Windows XP through Windows Server. No macOS section, no .dmg, nothing for the Mac.

Which means any site offering you "UltraViewer for Mac" is not the developer. For remote desktop software — something that, once installed, can watch your screen and drive your mouse and keyboard — installing a fake build is not a small mistake. Do not download it.

Why the Mac build is missing

Not laziness. A machine that can be controlled needs two capabilities, and every operating system grants them differently: capturing the whole screen and injecting mouse and keyboard events into the system. On Windows that is one set of APIs; on macOS it is two separate permissions in System Settings (Screen Recording and Accessibility), plus Apple requiring the app to be signed and notarised before it will run on anyone's machine.

So a Mac build means rewriting the core, not recompiling it. Plenty of remote desktop tools stop at Windows for exactly that reason.

What you actually need to do

"UltraViewer for Mac" usually stands for one of three different jobs:

You want to	Possible?
Sit at a Mac and control a Windows PC	Yes, and nothing to install on the Mac
Reach a Mac remotely (the Mac is controlled)	Yes, the Mac needs the app
Sit at Windows and control a Mac	Yes, both directions work

Chat Remote does all three

Chat Remote has a real macOS build, running on both Apple silicon (M1, M2, M3 and later) and Intel Macs, requiring macOS 13 Ventura or newer. Free, including for work.

If the Mac is where you sit

Nothing to install. Open the web app in a browser and you can control Windows machines, other Macs or Android devices — no account needed either.

If the Mac is what needs to be reached

Download the macOS build, expand it, drag ChatRemote.app into Applications.
On first launch, go to System Settings → Privacy & Security and enable two permissions for it: Screen & System Audio Recording and Accessibility. Then quit fully with Cmd + Q and reopen.
The app shows a machine code and a 6-digit password. Read both to whoever needs in.

Step by step, including the places macOS blocks you without saying why, is in download and install on macOS.

One difference worth knowing when a permission is missing: the person doing the controlling gets a message naming exactly which one, rather than staring at a black screen with no idea what happened. The error surfaces where someone can act on it.

Besides having a Mac build, what differs from UltraViewer

Free including for work. UltraViewer is free for personal use and sells business licences; Chat Remote does not draw that line.
The machine you sit at needs no install. A browser is enough.
Data travels directly between the two machines, end-to-end encrypted with keys only the two ends hold. The server helps them find each other and steps aside.
You can control from a phone, Android or iPhone.

Full comparison in Chat Remote and UltraViewer.

You do not have to drop UltraViewer

If the office still uses it for Windows machines and it works, keep it. The two install side by side without conflicting. Add Chat Remote for what UltraViewer cannot reach — Macs, phones, and the times you are sitting at a computer that is not yours.