Flatpak - Flatpak is the new framework for desktop applications on Linux
Homebrew - The missing package manager for macOS
NixOS - 25 Jun 2014 . All software components in NixOS are installed using the Nix package manager. Packages in Nix are defined using the nix language to create nix expressions.
Brewer X - Brewer X is a refreshing user interface for Homebrew. Manage your apps, scripts, and fonts with ease and dive into the most comprehensive software library for macOS.
Spack - A flexible package manager supporting multiple versions, configurations, platforms, and compilers.
Ninite - Ninite is the easiest way to install software.