Frog Linux is a fancy and opinionated reskin of Arch Linux running on the CachyOS kernel.
It is basically Arch with KDE Plasma, Calamares, some defaults I like, and more frog stuff than strictly necessary. It is not trying to reinvent Linux.
You need Docker or Podman, then run:
./scripts/build-local.shOr ./scripts/build-local.ps1 on Windows. The ISO ends up in output/.
That is pretty much it.