Arch Linux has pacman, which is a single program that does all of the things you need from a package manager. OpenSUSE systems have zypper, which also has one command for everything (and has a much more reliable format -- rpm).
How is RPM a more reliable format than dpkg? I've worked with both systems as part of writing a program that generates pacman/dpkg/RPM packages, and I've found dpkg to be the most sane and well-designed of the three, while the RPM format is a horrible and under-documented atrocity.
