External Image Gallery

I was wondering if any one knows of a way to include images from an external source in my WordPress posts.
I’m using WooCommerce, and have all my product photos hosted externally. I’m already using a plugin by Nelio for external featured images, and would like the same setup for the product gallery.
I do not want these images to be imported into my media library. I would also rather not put them in image tags right in the post. If anyone knows of a gallery that supports external images that would be great.