"Omnipay is a payment processing library for PHP. It has been designed based on ideas from Active Merchant, plus experience implementing dozens of gateways for CI Merchant. It has a clear and consistent API, is fully unit tested, and even comes with an example application to get you started."
I didn't know where to put this but thought it quite interesting.
Now, as feature requests go, I guess it could be a feature to make Cloudrons able to offer 1st-line support managed Cloudron instances as a service.
I'm sure that would be quite an epic development and consideration, thinking along the lines of the Value Adding Reseller (VAR) / Managed Service Provider (MSP) business model.
Anyway, this could make that possibility a little easier if there were many payment processor options to suit each VAR/MSP's needs.
@atrilahiji may also be interested in this for his payment processing project?