Finix

Finix is a strong match for the Stripe Payment Platform concept. It explicitly offers payment processing for online and in-person transactions, robust developer APIs for integration, and recurring billing/subscription management. The website also highlights fraud detection, comprehensive reporting, and solutions for platforms/marketplaces (similar to Stripe Connect). While not explicitly stated as 'Stripe Terminal', Finix offers in-person payment solutions with compatible devices. The platform also supports global payment methods and multi-currency transactions, and provides webhooks for event notifications. The core functionalities align very well with the 'must-have' features of a payment platform.