FedEx Express invented express distribution and is the industry’s global leader, providing rapid, reliable, time-definite delivery to more than 220 countries and territories.
This extension requires that your store uses the US or Canadian Dollars for its currency, US or Canada as the base country and that your server has SOAP installed. It primarily works with ins and lbs, but other units can be converted automatically.
FedEx can calculate quotes worldwide, as it handles both domestic and international parcels:

DOMESTIC
INTERNATIONAL

First Overnight
Priority Overnight
Standard Overnight
FedEx 2 day am
FedEx 2 day
FedEx Express Saver or FedEx Economy
Ground Home Delivery
FedEx Ground
FedEx Tube
FedEx First Freight
FedEx Freight Economy
FedEx Freight Priority
Smart Post (if enabled on account)

International Economy
International First
International Priority
Europe First International Priority
FedEx 1 day freight
FedEx 2 day freight
FedEx 3 day freight
International Economy Freight
International Priority Freight
Fedex Freight
Fedex National Freight
International Ground