Vanted Add-ons are extensions of the core system. They usually comprise of a large set of functionalities necessary in order to perform a whole workflow. Add-ons are able to interact with each other. The Vanted system can be extended in flexible ways by using BeanShell and JRuby scripts or by writing new Add-ons.
Due to changes in the underlying core structure of Vanted some Add-ons only work with older versions of Vanted.