Droptables is the only table manager for Joomla that offers a real spreadsheet interface to manage tables in Joomla. Plus, everything is loaded directly from your editor.
Create table, apply some really cool themes and start playing with the content.
Table copy, table category, some calculation functions are in the inner part of the toy. As Droptables is fully managed from your editor, it works in the same way both frontend and backend.
Usually tables require HTML/CSS knowledge, this is no longer the case, this extension is really easy for beginners. You can apply style on lines, columns and you have a style editor for each cell.
Requirements: PHP 5.3+, MySQL 5+, Joomla 3.x at least, all modern browsers