Read customer reviews of the WordPress Quick View Pro plugin by Barn2.
Rated 5 out of 5 stars based on 21 customer reviews.
This is the best plugin available and I say this because I tested absolutely all the options available on the market. This is the only one that supports other types of products as well (from official WooCommerce extensions). The support is very fast and with great service.
The plugin was just what I needed to display a lot of add-ons to my products in a nice and easy way. At some point I needed some support and I got a comprehensive answer!