time and internet tracking for small business

I am looking for advise on software that will track primarily log in/ out time on programs for 1-3 users(on one computer), program activity and It is not a must, but I would be interested in tracking what web sites the users had been looking at. I also have access to this computer to check information on the program. If the software runs in the background, I doubt any of the users are sofisticated enough to find it.