WooCommerce already comes with everything you need to sell physical and digital products. By adding badges and labels to your special products and deals, you will have an easier time grabbing the attention of your customers. The WooCommerce Advance Product Label and Badge Pro can help. It lets you add attractive badges and timers to your site.
This plugin lets you display labels for a period of time, based on query. You can also set a countdown label for your deals. This script has a drag & drop interface. It comes with over 14 label shapes for you to choose from. You can create rules based on various conditions and attributes to display labels in a smart fashion.
This script can handle custom text and image badges. It is a paid script by ithemelandco.