Blighty's British Store review for Searchanise Search & Filter

If you have a large amount of products, this app is a must have for customers to be able to find what they're looking for easily. I was surprised when I found that some cross sell and upsell widgets were included in the app (such as Most Popular Products, Similar Products etc). The app also includes some fairly in depth analytics of the search, to help you understand what people are searching for and how many purchases were made through the search.