PSPP is a program for statistical analysis of sampled data. It interprets commands in the SPSS language and produces tabular output in ASCII or PostScript format. PSPP development is ongoing. It already supports a large subset of SPSS's transformation language. Its statistical procedure support is currently limited, but growing. Source code for the latest development release of PSPP is available at ftp://alpha.gnu.org/gnu/pspp For information on differences from previous versions, please see file NEWS. Full documentation on PSPP's language and information on known bugs can in the doc/ directory. Questions and comments regarding PSPP can be sent to Ben Pfaff . PSPP bug reports should be sent to bug-gnu-pspp@gnu.org.