Filter by Process
I've noticed that a lot of the time what's easily distinguishable about an app is not it's class (which is sometimes a bizarre guid) or its title (which can be a long string that is really just whatever document is open) is the process (pside.exe). It would be great if when given the option of filtering autocomplete or a send you can put in the process name (e.g., "pside.exe") in the Window filter field.
Sorry, currently this is not possible.