OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
Google Pay - Make secure payments right through your Android device.
Gumroad - An all-in-one solution to sell your work and grow your audience.
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.
Google Wallet - The Google Wallet mobile app makes your phone your wallet.