Excelente, al fin encontré una extensión que funciona como lo esperaba. Sólo un crítica constructiva para mejorar, alerta de sonido.

Сложно разобраться. Следит только за 1 вкладкой вроде.

This is the only extension of its kind that actually works in Chrome. I tried Website Monitor, Visual Ping, Distill... none of them work as expected but this extension delivers. However it lacks a very important feature, sound alerts and as a result, it limps a bit. Also a DOM element picker would be desirable, but not having it is ok too. Otherwise a good one