GNU PSPP is a program for statistical analysis of sampled data. It is a free as in freedom replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions. The most important of these exceptions are, that there are no “time bombs”; your copy of PSPP will not “expire” or deliberately stop working in the future. Neither are there any artificial limits on the number
![PSPP - GNU Project - Free Software Foundation](https://cdn-ak-scissors.b.st-hatena.com/image/square/3b7dae30cd58196a6da20b91b424c7396b8dfea5/height=288;version=1;width=512/https%3A%2F%2Fwww.gnu.org%2Fgraphics%2Fheckert_gnu.small.png)