Arno Welzel

This widget displays top level categories in multiple columns.
After installation, just add the widget to desired sidebar or footer and optionally enter a custom title and the number of columns to be displayed.
By default two columns are used, but you can set any number of columns you like in the backend.
Also see details at <a href="http://arnowelzel.de/wp/en/projects/wordpress/multicolumn-category-widget" rel="nofollow ugc">http://arnowelzel.de/wp/en/projects/wordpress/multicolumn-category-widget</a>.

Multicolumn Category Widget

This widget displays top level categories in multiple columns.

Bastien Ho

NOUS Open Usefull &amp; Simple

aureliefoucher

Europe Ecologie Les Verts

A panel of tools for taxonomy display.
Displays categories and subcategories as a mindmap, list of cards or list of terms.
Morehover, categories & tags can can be enrechied with colors and images.

MindCat

Enhanced category display as mindmap or list of cards with colors and images.

Multicolumn Category Widget vs MindCat