Braintree is a Chicago-based company that primarily deals in mobile and web payment systems for e-commerce companies. The company was acquired by PayPal on 26 September 2013.

Checkout.com, (with the legal name of the main entity as Checkout Ltd.), is an international financial technology company that processes payments for other companies

PayPal Holdings, Inc. is an American multinational financial technology company operating an online payments system in the majority of countries that support online money transfers, and serves as an electronic alternative to traditional paper methods such as checks and money orders