ThriveCart is a SAAS based shopping cart with similar features to Teachable.
Samcart
SamCart is an online eCommerce platform with similar features to Teachable.
You can take payments and deliver digital and physical products with Samcart.
FastFunnels
Fastfunnels is an all-in-one marketing platform which will enable you to build websites/funnels, take payments and deliver products.