SPI data analysis: the CESR/Toulouse approach
  In order to allow for an efficient and flexible scientific analysis of data from the SPI imaging spectrometer aboard INTEGRAL, I developed a set of analysis executables that are publicly available through the internet. The software is fully compatible with the ISDC data format. It complements software that is actually available through ISDC, and will be included in the next ISDC software release. This paper describes the design of my software system and provides a brief introduction to the executables. 
Jurgen Knodlseder