SIF is a Java-Framework for checking spreadsheets against definable policy rules. It was created by Sebastian Zitzelsberger and later extended by Manuel Lemcke as part of their diploma theses "Error Detection in Spreadsheets" and "Dynamic testing of spreadsheets". The first one can be downloaded at http://elib.uni-stuttgart.de/opus/frontdoor.php?source_opus=7056](http://elib.uni-stuttgart.de/opus/frontdoor.php?source_opus=7056 "here") (German language).
Spreadsheet Inspection Framework is avaible under the GNU General Public License Version 3. For details see file LICENSE.txt.
SIF uses the Apache POI framework http://poi.apache.org/ which also requires XMLBeans http://xmlbeans.apache.org/. The required jar-libraries are located in the folder libs. However please note that these library have their own licences which are located in the subfolder licenses.