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Mastercard is a global payment technology company that facilitates electronic funds transfers worldwide. They are best known for their branded credit cards, debit cards, and prepaid cards, providing secure and convenient payment options for consumers and businesses across various industries.

Payplug is a French omnichannel payment solution dedicated to merchants, offering a range of services for both online and in-store transactions. It provides easy integration with e-commerce platforms, customizable payment pages, and tools for managing recurring payments. Payplug's focus on security and fraud prevention, combined with its user-friendly interface and local market expertise, makes it a popular choice for businesses operating in France and other European countries.

Square is a financial services and mobile payment company that offers a range of business software, payment hardware products, and small business services. Their solutions include point-of-sale systems, payment processing, and business management tools for various industries.

Mollie is a payment provider for Belgium and the Netherlands, offering payment methods such as credit card, iDEAL, Bancontact/Mister cash, PayPal, SCT, SDD, and others.

Visa is a multinational financial services corporation that facilitates electronic funds transfers globally, primarily through Visa-branded credit cards, debit cards, and prepaid cards. They provide secure, reliable payment processing solutions for consumers, businesses, and financial institutions worldwide.