gohide

gohide hides the running applications you choose - their windows, taskbar buttons and even their system-tray icons - with a single global hotkey, then restores everything exactly where it was. Most classic window hiders stopped working on the redesigned Windows 11 notification area; gohide still hides tray icons there. It can also mute an app while hidden, or suspend it entirely so a hidden game stops using CPU and GPU. Everything is fully reversible, works offline, and needs no account and no telemetry. Free for up to 3 managed apps; an optional Pro tier is a one-time perpetual purchase with no subscription.