I created a time keeper program for my final in Databases class. Its actually pretty useful if you have several jobs and you want to be able to keep track of your time and earnings. Its written in php/mysql so you can install bridges that let me know it you have your own home is one of the more out of the more popular by the occasional backpacker. You can read more about it here:

http://www.austinriba.com/projects/mytime-time-keeper/