PaymentSpring is described as 'Payment SaaS – the all-in-one, developer-driven, Mobile payment gateway. Dive into our powerful payment processing gateway designed for software platforms, businesses and nonprofits ready to accept more. Take a closer look' and is a payment processing service in the business & commerce category. There are more than 100 alternatives to PaymentSpring, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and Windows apps. The best PaymentSpring alternative is PayPal. It's not free, so if you're looking for a free alternative, you could try PayPal or Open Collective. Other great sites and apps similar to PaymentSpring are GNU Taler, Stripe, Litecoin and Strike.me.
this is a crypto currency that doesn't even exist in top 100 currencies anymore