Frenzy vs WooCommerce: What are the differences?
Developers describe Frenzy as "Sell to the most loyal customers in a new way (by Shopify)". Frenzy is built on Shopify’s highly scalable platform so you can sleep easy knowing your customers will always have a fast, enjoyable experience. Whether it’s a big flash sale, Black Friday or just the normal high order volume of your successful store, we want your business to succeed. On the other hand, WooCommerce is detailed as "The most popular WordPress eCommerce plugin". WooCommerce is the most popular WordPress eCommerce plugin. And it's available for free. Packed full of features, perfectly integrated into your self-hosted WordPress website.
Frenzy and WooCommerce can be primarily classified as "Ecommerce" tools.