Interesting! I did not know that ever existed.
Here are a few related Swedish organizations that are still active in 2021:
foss-sthlm: https://www.foss-sthlm.se/ Lista: https://lists.haxx.se/pipermail/foss-sthlm/2021-August/thread.html
Uppsala Linux User Group: https://www.ulug.se/ Lista: https://lists.fripost.org/ulug.se/sympa/arc/diskussion/2021-09/msg00000.html
Föreningen för Digitala Fri- och Rättigheter: https://www.dfri.se/ Lista: https://lists.dfri.se/listan/maillist.html
@joacim @eliasr @clacke @dsv abc-klubben seems to be around still. https://www.abc.se/