• If Then Else Logic part 1 and part 2 by Joe Follansbee
• The Mailit! tag by Joe Follansbee
• The <redirect> tag

As originaly based on Roxen Challenger 1.3, Caudium is fully compatible with it. Documentation of all Caudium part is on the way, but you can still use old Roxen 1.3 documentation.