Microsoft Windows gives us the ability to run multiple processes simultaneously - it's called multitasking. Some processes we start intentionally - we call them applications or programs. Other processes are started by the system - we call them services. Keeping track of all of the processes running, at any time, is a major activity.
Microsoft gives us Task Manager, to track the processes. Task Manager lets us choose a total of 25 items that we can learn about each process. This is the original tool that you might use, in watching what your computer is doing.
SysInternals (now another division of Microsoft, but that's another story) gives us Process Explorer, which lets us choose, in a tabbed menu
TaskManagerMain
Task Manager Select Columns
Process Explorer Main
Process Explorer Select Columns Process Image
Process Explorer Select Columns Process Memory
Process Explorer Select Columns Process Performance
Process Explorer Select Columns Status Bar
Process Explorer Select Columns DLL
Process Explorer Select Columns Handle