All Credit Card companies do charge at least some interest but some Credit Card companies may offer an interest free credit card for a certain amount of time and then after that time passes you pay interest on the credit card.
The Chase Freedom Unlimited and the Capital One Quicksilver credit cards offer no interest for a certain period of time as an introductory offer and then after the time passes you have to pay interest because that's how all credit card companies make money.
Without the interest the credit card companies charge on the credit cards the credit card companies would go broke and be out of business.