The most Advanced Free Shipping Per Package for WooCommerce plugin that allows you to define flexible Free Shipping scenarios for individual Cart shipping packages based on totals, weight, quantity, volume and many more.

Geargag Advanced Shipping is an plugin which allows you to set up advanced shipping conditions.

WooCommerce Advanced Free Shipping is an plugin which allows you to set up advanced free shipping conditions.

Change woocommerce price field zero to Free text.