instantOS is based on Archlinux and maintains full compatibility with the Arch-Wiki and AUR. It uses a custom window manager 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 instantARCH and instantNIX provides packages for the Nix universal package manager and NixOS.
instantOS is not a suckless distro. instantWM, instantLOCK and instantMENU started out as suckless forks, but contain less than 40% original suckless code and go into different directions. For instance, programs that are under 40kb should not put storage at such a high priority. Stability, usability, features and speed are more important. In contrast to dwm, instantOS provides a complete, consistently good user experience out of the box that is easy to configure and customize. It comes with a sensible feature set without sacrificing a certain minimalism.