QueryBuilder is an interpreter for the "pseudo sql" language. This language can be used for two purposes: 1. protect your database from illegal SQL by securing queries 2. ease writing complex relational queries by abstracting table internals

Provides a powerful templating language based on xhtml for rails

zena is a Ruby on Rails CMS (content managment system) with a focus on usability, ease of customization and web 2.0 goodness (application like behaviour).