BrainTree Gateway Add-on
This GIVE BrainTree Gateway Add-on allows you to accept credit cards directly on your website through your Braintree.com account. With the Braintree extension enabled, users are provided an option to donate using their Credit Cards without ever having to click off-site. The result is a better donation experience and ultimately higher conversion rate. With Braintree you can accept Visa, MasterCard, American Express, Discover, JCB, and Diners Club cards.
Please visit official plugin page for more information