Brian

ThemeBoy

Displays an interactive visual sitemap in admin. A nice touch for sites delivered to clients, and useful for managing a site as it gives a visual overview of all pages, tags, and categories.

Visual Sitemap

Display an interactive visual sitemap of pages, tags, and categories in admin.

Marinus Klasen

Show product thumbnails on every overview page. This plugin customizes the thumbnail rendered on your WooCommerce overview pages. 
It adds all product thumbnails so customers can scroll between them without having to visit the single product page.

mklasen's Thumbnail Slider

Show product thumbnails on every overview page. This plugin customizes the thumbnail rendered on your WooCommerce overview pages.

Visual Sitemap vs mklasen's Thumbnail Slider