Most plugins that extend the frontend of WooCommerce should work out the box. However, those extensions that add or alter methods of applying data may not be 100% supported with CoCart. These plugins in particular are not compatible with CoCart. If installed, they will cause issues with getting a valid response when using the REST API. Next to each listed plugin is the reason for incompatibility.
Plugin NameProduct PageIncompatible Reason
Smart Coupons For WooCommerce CouponsLinkPrevents coupons from being applied to the cart.