There is -- or at least used to be -- something called, IIRC, "Data Step". As I understood it, that was an implementation of the base SAS data-set manipulation

There is -- or at least used to be -- something called, IIRC, "Data Step". As I understood it, that was an implementation of the base SAS data-set manipulation language. Can't recall if it was OSS or just Freeware, nor if it had any of the statistical PROCs. GIYF, as we used to say (before we knew better).