instantOS is based on Arch Linux and maintains full
compatibility with the Arch Wiki and AUR.
It uses a custom window manager/compositor with a bunch of facilitating custom software
to provide an experience similar to a desktop environment but as powerful and
fast as a window manager. In fact, all pieces being made for each other
allows things that wouldn't be possible by just editing dotfiles.
It also has its own installer, ins arch,
and instantNIX provides packages for
the Nix universal package manager and NixOS.