Balance Checkout - The first B2B checkout
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.
Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.
Shopio - Shopio is an all-in-one hosted shopping cart solution.
PayPal.Me - Request money using your own personalized URL.
Selz - Seriously Simple Selling