VTT for in person games?

Does anyone use a screen to display maps in person?  Is there a VTT that can have a DM and Player mode on the same computer but different screens?

We use FoundryVTT with a horizontal TV as our gaming table (covered with plexiglass to protect the screen). In that game, the DM uses two laptops, one for the DM and another connected as a player which broadcasts to the TV.

You could do that same thing with a single computer (use the compute to run FoundryVTT, and have a browser open that connects as a player, and just use one monitor for the DM info, and the TV as the other monitor with the browser window). But honestly, we found it works better to have 2 separate devices. In our case the DM runs both, but I would suggest that a player should run the player view (TV) and the DM can then just focus on the DM stuff.

I'm sure other VTTs would work the same way.