Package Tracking is an application that lets you track all of your important incoming shipments, perfect for the Holiday season. You can track up to 5 packages at once, and the app will display all updates to the shipment's status, and wherabouts. It will track packages shiped from multiple couriers including UPS, FedEx, USPS, Ontrac, DHL DE, DHL PL, and DHL/Airborne USA.
You can purchase Package Tracking for $3.99 at BlackBerry App World. The price may seem high, but if you want to track all of your packages, from multiple couriers, in one place -- this is the app. It is compatible with a variety of BlackBerry devices running OS 5 and higher. Although BlackBerry App World doesn't show some of these in the "Supported Device" section, I have tested it with the 9700, 9650, and 9800.