The USAePay Ruby Library provides an interface for running server to server processing. The Library is for developing websites using the client side method, which provides a stable UI. This library is written in Ruby.
This week Google announced support of three new APIs in it's upcoming beta release of Chrome 61. These APIs, integrated from existing W3C standards, include the Payment Request API for making payment checkouts easier, the Web Share API for implementing native sharing capabilities and the WebUSB API.