BrainTree provides the global commerce tools people need to build businesses, accepts payments, and enable commerce for their users. It’s the simplest way to get paid for your great ideas, across any device, and through almost any payment method.
Merchants in more than 40 countries worldwide can accept, split, and enable payments in more than 130 currencies using Braintree.
Please find more informartion about how to install plugins here.
The plugin is provided absolutely for free and includes source code. Find the project Github repository here