The Official NORAD Santa Tracker is from the North American Aerospace Defense Command. It has a clock that counts down until Santa is on his way.
The website also lets you explore Santa’s Village at The North Pole. It has Christmas music, and a library of information about Santa, his sleigh, and holiday traditions from around the world. You can watch movies about NORAD and play several games in the Arcade.
The Google Santa Tracker also has a countdown clock. The rest of the website is filled with a bunch of Santa and Christmas related amusements that resemble Google Doodles. A couple of them are interactive games that you can play. The games are surprisingly addictive! One can spend a lot of time playing around with either of these two Santa Trackers.