what are the most commonly used credit cards providers?

Question

Not visa, mastercard or american express. Like capital one, MBNA, etc.

Answer 1

The correct term to use is issuers, not providers.

Seven largest issuers of credit cards in the U.S. (in alphabetical order) as of the end of 2005 were:

American Express
Bank of America
Capital One
Chase
Citibank
Discover
MBNA

A list of ten largest bank issuers (including their outstanding credit and number of active accounts) as of the end of 2004 can be found here:

http://www.fdic.gov/bank/analytical/banking/2005nov/Art2table2.html

Note that since this is the list of bank issuers only, neither American Express nor Discover appear on it.

Answer 2

Capital One is pretty large, Capital One is really great for people new to credit. Citi Bank is extremely popular as they offer 5% back. Also Bank One is a large.