Over the years, Amex evolved into a financial services company offering different types of financial products, including money orders and travelers checks, and eventually it's own brand of credit card more than fifty years ago.
 
 Amex is one of only two credit card issuers that is not affiliated with the Visa or MasterCard brand, but rather issues its own credit cards, served by its own payments network.
 
The American Express company today has added a wide range of credit cards to its list of offerings. The american express credit card is the third most popular credit card in the Unites States.