WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager – WordPress Plugin

https://wordpress.org/plugins/filter-everything/

https://wordpress.org/plugins/woocommerce/

https://wordpress.org/plugins/the-events-calendar/

https://wordpress.org/plugins/colorlib-404-customizer/

https://wordpress.org/plugins/wp-user-manager/

https://wordpress.org/plugins/product-expiry-for-woocommerce/