Customization Engine is an online app that you can install on your e-commerce site to create and offer customizable products.
Not too long ago you had to hire a developer to setup even simple widgets on your store so that your customers would personalize their products (and preview how they looked.)
Not anymore! With Customization Engine you work as you work creating your designs. Just drag-and-drop some stuff here and there, check some boxes, upload some images and voilá!
Customization Engine is available for Shopify stores. To start using it go here: apps.shopify.com/customization-engine and click on the Get App button.