I made a picture gallery application for webmasters who use plain-vanilla web-hosting services (particularly those with cPanel).
The webmaster uploads pictures, thumbnails and CSS to a directory, then runs the app in order to create and modify the picture descriptions. It handles later uploaded pictures just as well.
It has been installed and run successfully (using cPanel).
An art gallery (of the app's first client) is visible (actually the static pages generated).
It is written in Rails 3.
Copyright (c) 2011 Mark D. Blackwell.