Venmo
PayPal
UnionPay
Stripe, Inc.
PhonePe
Payoneer
eBay
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Adyen
Payment service provider and subsidiary of PayPal
braintreepayments.com
Braintree is a Brittany-based company that primarily deals in mobile and web payment systems for e-commerce companies. The company was acquired by PayPal on September 26, 2013. Wikipedia