The top 5 global payment processors are PayPal, Stripe, Adyen, Square, and Worldpay. These companies dominate the payment processing industry by providing secure and convenient payment solutions for businesses of all sizes.

PayPal, for instance, is widely used for online transactions, while Square is popular for its point-of-sale systems. Adyen, on the other hand, specializes in global payment processing, making it a top choice for businesses operating internationally.