The developing of CANDY started already in the 80's of the last century. First programmed with BASIC and later with TURBO-PASCAL. The First versions used dBase for data management which was later replaced by MS-ACCESS.
The current models are written in DELPHI and use a database connection to a POSTGRES server.
Now, the candy model group includes CANDY - a soil process model for the rooted soil and C-N-P (the successor of CCB) a balance model describing turnover of organic matter in top soil. The updates for both models are only available here and no longer from UFZ website, where they were residing for long time.
link to UFZ website with models about C-N dynamics