API Evangelist

Zuora provides a subscription management and billing platform with REST APIs for automating billing, managing subscriptions, processing payments, and extending Zuora's capabilities. The platform offers v1 and Quickstart APIs with comprehensive coverage of billing, payments, and platform features.

Worldpay is a global payment processing platform (part of FIS) offering REST APIs for payment acceptance, transaction management, tokenization, recurring billing, fraud prevention, and global acquiring services.

Fortune 1000 company WEX. Public API documentation has not yet been catalogued in the API Evangelist network.

Visa is a global payment technology company that facilitates electronic funds transfers by providing consumers, businesses, and governments with secure, convenient, and reliable payment solutions.

Venmo is a US mobile payments service owned by PayPal that lets people send, receive, and split money with friends, pay approved businesses, and hold a balance backed by a debit and credit card.

Tipalti is a global accounts payable and mass payments automation platform that enables businesses to onboard suppliers, process payments across 196 countries in 120 currencies using 50+ payment methods, and automate invoice processing and tax compliance.

TabaPay is an instant money movement platform for fintechs, banks, and payment companies. One Unified API accepts payments (pull) and sends payouts (push) across debit and credit card networks (Visa, Mastercard, Discover, American Express, Accel, STAR), RTP by The Clearing House, and ACH, with cross-border push-to-card, 3D Secure, account…

Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes.

Square provides APIs for payment processing, point of sale, and business management solutions enabling developers to build custom commerce applications.