WooCommerce Braintree Extension : Finally, a payment gateway not from the stone age. Braintree offers an all-in-one merchant account and gateway solution to process your credit card transactions and bring simple and easy-to-understand payment processing right to your door. Braintree provides unparalleled support and scalability, which is why they are the leader in mobile transactions. Most merchants can start accepting payments instantly. Through Braintree you are able to accept Visa, Mastercard, Discover, American Express, Diners Club, and JCB.