I like PayPal, it has a high security standard. Except when I am the one suffering a chargeback for some flimsy reasons.
Shift4 Payments might be a bit more popular than PayPal. We know about 1 link to it since March 2021 and only 1 link to PayPal. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
(I live in USA) When I go to payments under my shopify account to add paypal as a payment method I am having trouble doing so. I first click activate paypal > activate paypal express checkout which directs me to a "security challenge" (confirm I am not a robot). Then it just brings me to paypals website (paypal.com/us/home). When I sign in nothing happens, I am just on my paypal homescreen. Source: over 1 year ago
Nerdwallet.com has a nice list of them. I only have experience with square though. I know you can resell shift4.com. But I don't know the requirements. Shopify has a POS as well and I am sure there are TONS of users on here using it. Source: over 2 years ago
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Paycom - Paycom is a Human Capital Management system that helps companies manage the complete employment life cycle, from recruitment to retirement.
Payoneer - Whether making international payments, receiving funds, managing your digital business, or accessing capital, Payoneer opens your business up to the world.
HireRight - HireRight provides on-demand employment screening solutions for a global customer base of organizations.
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.
GoodHire - GoodHire is an employment screening service with solutions for businesses of every size.