What are some alternatives?
When comparing Avangate and Shopify, you can also consider the following products
Magento - Magento is the eCommerce software and platform trusted by the world's leading brands. Grow your online business with Magento.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
FastSpring - With FastSpring, software companies sell more, stay lean, and compete big.
BigCommerce - BigCommerce provides ecommerce software solutions and shopping cart software for online businesses. Try it free and start selling your products online today!
PrestaShop - Create your online store with PrestaShop's free shopping cart software. Build an ecommerce website for free and start selling online with hundreds of powerful features.
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.