Payfirma is described as 'Accept credit card payments online, in-store, and while mobile with one merchant account' and is a payment processing service in the business & commerce category. There are more than 25 alternatives to Payfirma for a variety of platforms, including Web-based, iPhone, Android, SaaS and Mac apps. The best Payfirma alternative is PayPal. It's not free, so if you're looking for a free alternative, you could try PayPal or GNU Taler. Other great apps like Payfirma are Apple Wallet, Lemon Squeezy, Payoneer and PayPro Global.