Lydia Watch - Pay for things with one tap on your Apple Watch
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Pay Finders - Discover and explore local merchants that accept Apple Pay
SuperPay - Get paid faster with your own custom payments page
Vue Storefront - Open Source PWA for any eCommerce
Zelle - Zelle is a fast, safe and easy way to send money in minutes to your friends and family.