A while back I discovered a wonderful web-based tracking tool on TrackThePack. The website provides a very simple yet elegant design. Below is a screen shot of the site to give you an idea.
The site is very simple to use. Simply enter your tracking number provided by your package carrier, and click on the "TrackThePack" button. The site supports most carriers including: UPS, FedEx, DHL, and USPS. The site is able to automatically recognize the proper carrier, and give you detailed results as to the current location, and timing of your package's arrival. The site even provides a helpful Google Map, detailing the path your package has taken (see screenshot).
So next time you need to track a package, go ahead and track your pack with TrackThePack!