[Wilya]

Supervisor, god, monit, circus, etc.

And even though it can handle both init and process supervision, runit has a clear separation between the two tasks. The "runit" program handles init tasks. The "runsvdir" program handle process supervision. And each one is completely functional without the other.

[digi_owl]

I wonder how much reduced the grief would be if systemd could run on top of another init process as just a supervisor (similar to how daemontools work, and runit can work).

but then the argument is that systemd needs to be init to properly manage the cgroups etc.