Conda - Binary package manager with support for environments.
Chocolatey - The sane way to manage software on Windows.
pkgsrc - pkgsrc is a framework for building over 17,000 open source software packages.
Homebrew - The missing package manager for macOS
Pacman - Pacman was developed to be the package manager for Arch Linux, and is also used by KDE-focused Chakra Linux.
Ninite - Ninite is the easiest way to install software.