WP All Import has a four step import process and an intuitive drag & drop interface that makes complicated import tasks simple and fast.
Demo: https://www.wpallimport.com
Save time by creating and updating complex products and managing your product catalog. Product CSV Import Suite lets you import thousands of products and supports complex products and custom data from orders, product suppliers, brands, Google product feed and more.
Demo: https://woocommerce.com/products/product-csv-import-suite/
RO CSVI is an import and export component for the Joomla Content Management System.
Demo: https://rolandd.com
ImportWP Pro allows you to import any XML or CSV file into WordPress. An easy-to-use interface with built-in preview makes it easy to customize your import.
AJAX Contact form with light-weight contact request manager. Can be easily customized and installed. Its very easy to use.
Demo: https://codecanyon.net/item/php-ajax-contact-form-with-admin-csv-exporter-filters/179128