I often want to know where certain applications on my Mac store data. Often, I just ask on SuperUser, for example, "Where does Stickies save note data?" But, I'd like to know how to research the issue for myself.
What tools can I use to track which files an application changes, and at what times?
I know that I can use the System Profiler to see which files and ports an application has open, but I'd like a better solution. I'd like to be able to see real-time, or afterwards but with timestamps, each time an application writes to a file, and which files it's writing to.