Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.
Cash App - The easy way to send, spend, bank, and invest.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
Facebook Pay - Send money to your friends via Messenger
Vendure - Open-source headless e-commerce framework for developers
PayPal.Me - Request money using your own personalized URL.