I remember hearing of some software that would take a screen print every 15 minutes and store it in a file. They mentioned it can be used to keep track of the amount of time you spent on a project.
I know of SnagIt. http://www.techsmith.com/screen-capture.asp
What are some of the other packages out there?
Solution:
The Automatic Screenshot Journal
TimeSnapper runs in the background of your computer, taking screenshots of your desktop every few seconds all week long.
Where did all my time go?TimeSnapper lets you play back your week just like a movie. You can play it at any speed you like, and jump in at any time you like.
When it’s time to fill out that dreaded timesheet, TimeSnapper is a savior. No need to tear your hair out trying to remember where all the time went.