Earlier quoted context omitted.
It sounds like the purpose of muzzle is to enable Do Not Disturb automatically so you don't have to remember.
I have a few qualms with this app: [1] 1. For a Linux user, you can already build such a system yourself quite trivially by writing a shell script, compiling your own custom X server, and then monitoring the screen state for full-screen apps. For Windows or Mac, you just remote desktop to your Linux box with built-in software. 2. It doesn't actually reroute the notifications. Most people I know want to be able to per…
Does everything have to be a moneymaker? Like you said, this would be trivial to setup yourself. It's a nice piece of software that provides some advertising for his other products.