Useful links:

NSO IBIS data reduction IDL software package - http://nsosp.nso.edu/dst-pipelines
(this package does not work with the data archived in IBISA)

 

SOLARNET - INAF IBIS data reduction IDL software package - (Download)

 

SOLARNET - INAF IDL code to adapt the IBIS Level 1 data to the CRISPEX interface - (Download)