PSPP

PSPP is a free software for statistical data analysis. It is intended for statisticians, social scientists, and students who need a quick and convenient analysis of sample data. PSPP offers a variety of features, including descriptive statistics, t-tests, Anova, linear and logistic regression, measures of association, cluster analysis, reliability and factor analysis and non-parametric tests. It supports over a billion cases and variables and is compatible with SPSS syntax and data files. PSPP is free of license fees and has no expiration period. It is licensed under GPLv3 or later and runs on many different computers and operating systems. Price information: PSPP is free.