Nuages is a simple and easy to use photoblog engine that you can host on Google's AppEngine (http://appengine.google.com).

Features:
 * no host required (just create a Google AppEngine account)
 * easy to install (due to Google's AppEngine SDK)
 * very little configuration needed
 * browse images by location, categories or just in reverse chronological order
 * fully customizable templates
 * friendly URLs 

For step-by-step instructions on how to install it, see the README file.
The source code is licensed under the New BSD license. See the LICENSE file for details.
Go to http://code.google.com/p/nuages/ to read more about the project.