Shopify is a powerful ecommerce website solution that allows you to sell online.
In the past we've integrated Shopify with ExpressionEngine websites where the ecommerce facility needed to be a separate entity.
We've seen a couple of these systems in the past but generally they've sucked. They tend to be great for retail staff but are really nasty when it comes to designing a website around them.
Shopify today have launched their point of sale system.
This will be killer for many businesses that need POS facilities and a good looking website.
There are already a ton of smart websites running Shopify like:
To name a few from the featured list.