Magit (Git GUI in Emacs) and Tramp (open remote files via SSH in Emacs),
Thierry Martinez (SED)
Docker, Clémentine Fourrier (SED)
NixOS, Pierre-Étienne Meunier (TAPDANCE).
NixOS is a Linux distribution based on Nix,
a purely fonctionnal package manager, which means it’s stateless.
More about it.