Void is a notable exception to the majority of Linux distributions because it uses runit as its init system instead of the more common systemd used by other distributions including Arch Linux, CentOS, Debian, Fedora, Mageia and Ubuntu.[12] Void is the first distribution to incorporate LibreSSL[2] as the system cryptography library by default.[2] It is also unique among distributions in that separate installation media using both glibc and musl are available.