OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
Cash App - The easy way to send, spend, bank, and invest.
PayKickstart - PayKickstart is the ultimate shopping cart and affiliate management platform, empowering online Entrepreneurs and digital publishers with the tools to sell their products online.
Facebook Pay - Send money to your friends via Messenger
Gumroad - An all-in-one solution to sell your work and grow your audience.
PayPal.Me - Request money using your own personalized URL.