and my little contribution if you have a $5 logic analyzer board (FX2LP) and want to play in Sigrok/PulseView/DSView https://github.com/raszpl/sigrok-mfm
There was a few mentions of KryoFlux in the X-Copy article linked from HN 4 days ago: https://news.ycombinator.com/item?id=45552913 (X-Copy developer Christian Bartsch that is interviewed now works on KryoFlux.)
https://news.ycombinator.com/item?id=39495973 - February 2024 (23 comments)
https://wiki.techtangents.net/wiki/Floppy_Disk_Imaging
https://github.com/keirf/greaseweazle
https://kryoflux.com/