Pacman (package manager) is a package management system for Linux systems, which helps users to install, update and remove packages with ease. Pacman (package manager) is a command line based tool that can be used to install, upgrade, and remove applications from the system. It can also be used to search for and download packages from the official repositories. Pacman (package manager) is based on the concept of 'dependencies', which means that a package can be installed only if its dependencies are met. Pacman (package manager) is a powerful and reliable package manager, and it is considered to be one of the best package managers available for Linux systems.
Discontinued yaourt is listed in the "discontinued and problematic" section on the "AUR Helpers" page in the Arch Linux wikihttps: //wiki.archlinux.org/index.php/AUR_helpers#Discontinued_or_problematic
Discontinued In December 2017, its main developer announced pacaur as a "maintenance-free project." https://bbs.archlinux.org/viewtopic.php?pid=1755144#p1755144