This plugin removes the mandatory 'Category Base' from your category permalinks. It's compatible with WPML.
Remove Category URL strips the /category/ base from your category URLs, turning something like /category/my-category/ into simply /my-category/.
Add Categories and Tags to Pages.
Tags, Categories and WordPress terms are easy with TaxoPress. Add a Tag or Category to Pages, manage your WooCommerce Categories and Tags and more.
Allows you to automatically add hierarchic categories in WordPress Navigation Menus.