A simple PayPal library for .NET. Simple implementation of the Express Checkout. A simple library for non-technical users. The library allows creating custom checkout. It incorporates three main methods: for setting up the payment, for getting the shipping details from PayPal and for confirming the payment. The library also has a feature that allows setting the mobile checkout page, so that users checking out on mobile platforms get a customized PayPal checkout page for a mobile device.