OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
ChangeTip for iPhone - Send and receive dollars and bitcoin on social (with emoji!)
Gumroad - An all-in-one solution to sell your work and grow your audience.
Facebook Pay - Send money to your friends via Messenger
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.
Square Cash - Email money to Anyone