Gallery software like zenfolio

I already have my own hosting and site but I really like how the galleries are set up thru zenfolio. Is there any software out there similiar that I can integrate into my site? I really like how you can mouse over to get the photo information, add to cart, etc.

I use Lightroom and a theme from Lightroom Galleries that includes a paypal shopping cart and it works great and you can also find other themes. I host my own here at home and that is what I use. I also have a Flickr Pro account and SmugMug Pro account, but it is so much faster to create my own and store them locally and not have to upload.

The template is located at
http://www.lightroomga​lleries.com/category/t​emplate-downloads/

You can download a free trial version of Adobe Lightroom. I highly recommend the program!