wolfoz

Improved use of hierarchical taxonomy metaboxes for products, posts, etc. 
Automatically select parent elements when an element is selected and automatically deselect child elements when an element is deselected. 
Support for custom taxonomies. Highlighting the changed state of elements.

WolfOz taxonomy mbtree

Tree view for metaboxes of taxonomies (products, publications, etc.)

Benyam.in

With WPArchivesTree you can display a widget which list all articles in your website on a treeview. 
Articles are group by month and year and you can choose if you want to display the first month articles or not.

WPArchivesTree

Put a widget treeview to list all articles in your website

WolfOz taxonomy mbtree vs WPArchivesTree