http://orbisius.com/go/woo | This is a premium WooCommerce extension that lists all the products on one page and allows users to quickly order products. Since v.1.0.2 you can specify a category and list all the products of that category.
= Features / Benefits =
* Allows your users to quickly order your products
* Easy to use (just paste a shortcode) and that’s it
* You can limit the number of products (default: 100). Use -1 to display all.
* The data is cached/saved for a quick access at a later time