GNU PSPP

PSPP is a stable and reliable statistical analysis software that can perform descriptive statistics, T-tests, ANOVA, linear and logistic regression, measures of association, cluster analysis, reliability and factor analysis, non-parametric tests, and more. PSPP offers a wide range of features, including a point-and-click interface that is easy to use, even for beginners, a variety of statistical and data visualization tools to create custom reports and dashboards, and Support for over 1 billion cases & variables & all standard character sets and which has been translated to multiple languages.