Alkimia is the infrastructure for common storage and business logic that will be used by all financial applications in KDE. The target is to share financial related information over application bounderies.
Alkimia is the Arabic word al-kimia (الكيمياء) for alchemy. That has a nice relationship to gold and thus to money and was picked for that reason on the first sprint of the KDE Finance Group.
The Use-Case page lists some user centric use case examples for applications making use of Alkimia.