Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.
DyScan - Stop fraud and process payments faster
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.
WePay Clear - Build your own payments product fast with zero risk
Stripe Payment Links - Create a link. Sell anywhere.
BTCPay Server - A free and open source server for merchants wanting to accept Bitcoin for their business.