Recurring Referrals allows you to record affiliate commissions anytime a subscription payment is made on a membership that was referred by an affiliate. Instead of just awarding affiliates a commission on the initial signup, you can award them for every payment the members make over the lifetime of their subscription.

Advanced Product Fields for WooCommerce Pro
Advanced Product Fields for WooCommerce lets you add extra options to your products, like text boxes, dropdowns, swatches, images, and more.