I have a new MacBook Pro running Monterey 12.0.1. and an ICOM 7300. I need to know which version of Fldigi to download. Looks like there are 3 or 4 possibilities. The SourceForge website and the Fldigi help files don't tell me. I assume it's a 64 bit program.
I believe the one for Big Sur will work on Monterey as well: https://sourceforge.net/projects/fldigi/files/fldigi/fldigi-4.1.20_bs.dmg/download Also, I would strongly recommend joining the Linuxham group on Groups.IO which is the official support email group for Linux AND macOS. The developers are very active there and can answer any questions (such as which version to download ).