We are building an ecommerce app where we want our users to pick out a (any provider we can make compatible with our app) payment provider. Up to today, we only support paypal and we have implemented this rather manually.
We are looking for some sort of a module (free or commercial) to easily plugin in more payment providers to let customers accept payments through them. Our customers would use this to accept payments for sales in their web shops.
Any ideas on such "modules"? I know of the Zend_Payment module but that's not updated anymore or isn't out yet at all. We run PHP in the Zend Framework if that matters.