http://www.fedex.com
2. United Parcel Service
http://www.ups.com
3. DHL Worldwide Express
http://www.dhl.com
4. USPS
http://www.usps.gov
5. Emery Worldwide
http://www.emeryworld.com
6. Airborne Express
http://www.airborne-express.com
7. TNT
http://www.tnt.com
8. BAX Global
http://www.baxworld.com
9. Consolidated Freightways
http://www.cfwy.com
10. USFreightways
http://www.usfreightways.com