I'd like to find a tool that would monitor my windows (specifically across multiple virtual desktops), and popup an alert in, say, my currrent desktop whenever anything happens in another window anywhere (new mail in Outlook? New chat in FF gmail tab? File content auto-updating in NPP? etc etc).
The objective is to save cycling through all windows periodically to see if something has happened, and instead be notified of changes as they happen.
Do you know anything like this? (Freeware/Open-Source + Portable is a bonus, but I will gladly consider all options...