A simple open source gallery, where you don't have an admin interface. Instead you just prepare the album on your computer, upload to the host (ftp) and visit example.com/import.
Now your album are created and you can view the result on your site.
Build using Laravel 4 framework. I'm not exactly proud of the code in this, but I do like the result ;)
You can see it in action on my girlfrends website here: gallery.camillagejl.com.