What are some alternatives?
When comparing iRefers and Avangate, you can also consider the following products
Hotmart - Hotmart is a free and complete platform to host and sell online courses.
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.
Adwalnut - Adwalnut is a SaaS based affiliate tracking and reporting software provides conversions tracking, campaign management & reporting software.
Magento - Magento is the eCommerce software and platform trusted by the world's leading brands. Grow your online business with Magento.
Commission Junction - CJ Affiliate by Conversant (formerly Commission Junction)
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.