zena is a state-of-the-art CMS (content managment system) based on Ruby on Rails with a focus on usability, ease of customization and web 2.0 goodness (application like behaviour).
Translate unsafe "pseudo sql" into safe SQL
Team work using git made easy.
html based templating language (produces ERB)
RubyLess is an interpreter for "safe ruby".
Write tests using YAML