WP Table Manager is the only WordPress table plugin that offers a full spreadsheet interface to manage tables. Create a table, pick up a theme and start editing tables right away. You'll enjoy a set of powerful table edition tools, such as: HTML cell editing, table copying, calculation, Excel and Google Sheets synchronization. As end user, editing a table is as simple as clicking on cell, and editing data with or without a visual text editor.
Demo: https://www.joomunited.com/wordpress-products/wp-table-manager