Review on First by Tim Venkatasubramanian

Easy integration with our payment gateway provider - they have an API that is really simple for us as developers (and also very well documented). No problems so far! It's worth noting though that you may need some PHP knowledge in order to setup your own instance of this service but there are plenty tutorials available online if needed. We're integrating diems into one or more e-commerce sites we operate through them which will help customers pay directly from those websites without needing any additional plugins/extensions etc installed by themselves.