WordPress Countdown plugin is an nice tool to create and insert countdown timers into your posts/pages and widgets.
YITH WooCommerce Product Countdown allows you to put a digital counter in the product pages
Wp Clock Counter Plugin Super Lightweight, Fully Responsive and easy to install.
Display an animated countdown clock on your sidebar. Select from several clock designs, colors, sizes, pictures and animations. Responsive plugin, ser
The official #1 most intelligent, scarcity countdown timer plugin ever created for WordPress to expire posts AND pages on autopilot!
Uji Countdown - HTML5 Customizable Countdown Timer
WordPress plugin to add a countdown timer to your website. Display a timer and countdown to any day, time, or event.