This article by Meissner in 1975 mentions twenty. One of which is ratfor: https://dl.acm.org/doi/pdf/10.1145/987316.987320
By august of 1975, he was up to 51. (List published in Meissner’s For-Word newsletter.) Still only one version of ratfor.
This article by Meissner in 1975 mentions twenty. One of which is ratfor: https://dl.acm.org/doi/pdf/10.1145/987316.987320
By august of 1975, he was up to 51. (List published in Meissner’s For-Word newsletter.) Still only one version of ratfor.