I was a dedicated user of FF since 2005/6 till about a year ago. I don't why I switched to Chrome, but since then haven't touched FF. I need an app like Fox Cl

I was a dedicated user of FF since 2005/6 till about a year ago. I don't why I switched to Chrome, but since then haven't touched FF. I need an app like Fox Clocks, which worked in FF only for a long time, but now is available on Chrome too.