This plugin removes the mandatory 'Category Base' from your category permalinks. It's compatible with WPML.

(32)

The AVH Extended Categories Widgets gives you three widgets for displaying categories.

(27)

Filter post categories and taxonomies live in the WordPress admin area

(25)

Display Categories Widget will display Child categories on your sidebar. Can be placed on widget in sidebar.

(25)

Export Categories, Tags and Taxonomies

(25)

Preserves the category hierarchy on the post editing screen

(23)

Mark a post to be placed at the top of a specified category archive. It's sticky posts specifically for categories.

(23)

Create custom enhanced pages for categories and any taxonomy term and manage them as a custom post.

(23)