More than 60 countries have pledged assistance of some sort for the recovery effort. Among them:

A half-billion dollars is coming from Kuwait, the country the U.S.-led coalition liberated from Iraqi occupation in 1991.
Another $100 million is coming from Qatar.
The 22-member Arab League is calling on Arab nations to provide hurricane relief.
Austria, Belgium, Britain, Denmark, Estonia, France, Germany, Greece, Luxembourg, Finland, Italy, Slovakia, Slovenia, Sweden, Spain and The Netherlands have pledged assistance.
China has offered $5 million and pledged logistical and other assistance. South Korea is sending $30 million. North Korea, which views the U.S. as its main enemy, has sent a message of sympathy through the Red Cross.