FedEx Mobile. Get up-to-date information on the whereabouts of your FedEx-shipped package by simply providing the tracking number. You can also generate shipping labels, create custom package-delivery-monitoring lists and schedule a pickup using the app. It also provides accurate and reliable transit times and shipping rate information. The app also help locate the nearest FedEx drop box, FedEx Office® Ship Center or FedEx Office location without having to log in. Compatible with iPhone, Android and BlackBerry.
UPS Mobile. This app offers easy tracking and management of all your UPS shipments. You can also create shipping labels, calculate shipping costs and estimate delivery times accurately while on the go as long as there is a cellular signal. The app also provides information on the nearest UPS service store in case you need to drop a shipment off by hand. Get the free app here: iPhone App, Android App, BlackBerry App.
Avery Universal Package Tracker. If you are using various carriers for shipping items, you might find this app very useful. It tracks shipments with most of the major shipping carriers, including FedEx, USPS, UPS and DHL. You can also get detailed carrier progress scans, estimated delivery dates and find the current location of your package on a Google map. The app can track up to 50 packages from multiple carriers at a time or just key in the tracking number to get on-the-spot package info for a single item without having to log in. Only available for iPhone and Android mobile devices.
USPS Mobile. This app provides easy access to popular USPS.com tools while you are on the go. Track packages, use the handy postage calculator to get an accurate estimate of shipping prices, look up zip codes, and determine pricing and timing for any type of shipment. You can also check the status of packages sent with any other type of shipping service, including FedEx, UPS and DHL only. You can also find USPS locations and USPS drop boxes within walking or driving distance. Available for iPhone.