OpenRC – Wikipedia
On Unix-like systems, OpenRC is a dependency-based init. Since 0.25 OpenRC includes openrc-init, which can replace /sbin/init, but the default provider for the init program is SysVinit for OpenRC. As well as Linux, OpenRC can also be used on several BSD systems. It was created by a NetBSD developer, who started the Gentoo/FreeBSD project.