If you own a small business, then cash flow is probably the most challenging part of the buisness specially in this recovering economy. However you still have options to apply for small business creditcards some of those are
American Express Blue for Small Business
American Express Corporate Gold Credit Card
Advanta Platinum Business Credit Card
Capital One Small Business Credit Card
There are more business creditcards for small businesses out there but the ones above seem to be the most popoular ones as they are easiest to get.