Time Keeper is a small utility that can help you track down the time that you spend working on your projects. The app is incredibly light but oh so helpful. I am one of those persons who gets easily distracted by just about anything. Having a stopwatch running while I work keeps me focused. And Time Keeper is exactly that, a very advanced stopwatch.
When you first open Time Keeper it will ask you to create a TimeKeeper file or create a new one. I treat each Time Keeper file as if it is a different project. So, I create a single file for each project and I open it and activate it when I am working on that project. The application then can track how much time I spend working on my projects. However, it can't really detect what I am doing or if I am lying to it. In other words, it won't know what application is open and active, etc. Other similar apps can do that. Time Keeper will keep a log of all the different sessions in which you activated the Time Keeper file and then you can save that into a PDF file that you can send clients, to justify a budget, for example.
In short, Time Keeper is a nice way of tracking the time you spend doing pretty much anything. It is a free tool and it works well.