fifm is a hobby project, fifm is there to serve an easier user experience regarding terminal-based file managers.
fifm is written in rust, rust is the language of choice for fifm because it provides performance and reliability.
fifm is open source and freely distributable
fifm is licensed under GPL-3.0
PR's could be accepted by the maintainer, Koen Sampers
There are no guidelines for developers yet, they will be there in the future :)
From the AUR: paru -S fifm-bin