Booked recommends the following add-ons: Calendar Feeds, Front-End Agents and Payments with WooCommerce. Booked recommends the following add-ons: Calendar Feeds, Front-End Agents and Payments with WooCommerce. Booked recommends the following add-ons: Calendar Feeds, Front-End Agents and Payments with WooCommerce. Booked recommends the following add-ons: Calendar Feeds, Front-End Agents and Payments with WooCommerce.