penguins' eggs
On the road of Remastersys, Refracta, Systemback and father Knoppix!
Arch
Adding Arch was laborious, but it was possible, because the project started and evolved to be as universal as possible.
Manjaro
penguins-eggs is part of communty repo of Manjaro.
Debian derivatives
Linuxmint, KDE neon, Pop!_OS and virtually every Debian, Devuan and Ubuntu derivatives are supported.
Arch derivatives
Arch and derivatives.
fedora
Fedora of course, but also AlmaLinux and RockyLinux!
Alpine Linux
Come in help to bring penguins' eggs to Alpine Linux!