• PayPal Holdings Inc.
• Mastercard Incorporated
• Visa Inc.
• Square Inc.
• Stripe Inc.
• Amazon Pay
• Adyen N.V.
• Worldline SA
• Fiserv Inc.
• ACI Worldwide
• Google Pay (Alphabet Inc.)
• Samsung Pay (Samsung Electronics)
• Apple Pay (Apple Inc.)
• Alipay (Ant Group)
• Tencent Holdings Ltd. (WeChat Pay)