GNU PSPP is a program for statistical analysis of sampled data. It is a free replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions.
This webpage allows you to use PSPP to read SPSS or SPSS/PC+ system
files (.sav or .sys) or SPSS portable
files (.por). It also has experimental support for
reading SPSS output viewer (.spv) files.
We never disclose files uploaded to this service, but we do use them to improve the quality of the service.
Source code for this conversion service.