Yeah Microsoft makes a few. If you are not great with databases you could try Excel and if you are good with database Access or if you are into open source software I like Open Office and mySQL.
But seriously, I think the less complicated the better. I have one 2008 ball and I track her weight, shed dates, feeding dates and food item weights all in a spreadsheet with date, event, data as columns. I think its much better to pick something and start recording data points today than to find the perfect software. You can always move the data to a new program later if you want too. I am a programmer by education and a network manager by profession. Far too often I see simple problems over solved. Start today with a pad of paper if you have too and use whatever you like later. I for one will be posting a new section of my web site for my ball python this weekend with data I collect, pictures and a live web cam.
I don't always take my own advice on over solving problems.