OpenRC is a dependency based init system that works with the system provided init program, normally /sbin/init. It is not a replacement for /sbin/init. OpenRC is 100% compatible with Gentoo init scripts, which means you can probably find one for the daemons you want to start in the Gentoo Portage Tree.
Related preject:
The Gentoo OpenRC Project is open to all contributions. If you would like to
get involved in the project, feel free to ask members of the project, in