Taskbar widget (Windows)
On Windows, Ping Monitor shows your hosts in the taskbar, so you can watch them with the main window closed.
Wide layout
Host names with their latency, coloured by status. When not every host fits, the ones in trouble are shown first.

Compact layout
Too narrow for names, it shows how many hosts are offline, degraded, online, and paused or waiting for a reply:

Setting it up
The widget is on by default; View → Taskbar Widget or the tray icon’s menu turns it off. Drag its edge to resize it. The tray menu also anchors it to the left or right of the taskbar and, with several monitors, chooses the taskbar it sits on.
Minimise the main window and keep the widget in the taskbar. The latencies sit in the corner of your eye, all green, and the moment one turns amber or red you notice without breaking your flow – with the alerts as a backup if you are looking away.