What are some alternatives?
When comparing ChannelReply and Cart2Cart, you can also consider the following products
Aitoc - Aitoc is the e-commerce agency offering Magento modules and custom Magento plugins.
Remarkable.net - Remarkable.net is a full service eCommerce technology agency offering design, development and marketing services.
Prospect.io - Prospecting, like a boss. Find any email, reach out, measure everything and integrate with your CRM.
InkSoft - InkSoft is the most leading e-commerce platform that is specially designed to fuel sales and simplify overall production in businesses just like yours.
Jungle Scout - Amazon product research made easy.
SquareUp Payment Method - Squareup Payment Method by CedCommerce allows the acceptance of payments in Magento via Square payment method.