I know this is not about MS Access perse, but I still feel there is a void concerning decent MS Access FOSS alternatives. MS Access hit a certain sweetspot between functionality and ease of use that I haven't seen anywhere since. Retool or Airtable are always named as viable alternatives. But they're not imho.

I have built many MS Access applications and they always were surprisingly resilient. I believe even to this day there is a MS Access database GUI application running somewhere I built 15 years ago. Standalone, not connected to the web or anything. Just plowing away, just a single self contained file (mind the Office dlls etc.), backup and recovery is as easy as copying the complete file over to anywhere else and you're good.

I think I have tried every alternative out there, but none hit that sweetspot (they always lack something).