working on a monitoring tool which only keeps an eye on daemon's logs, and report if they're down, waking, or up. You can get the logs for specific state of specific daemon, and it's built to handle log rotations.

It prints things with ECMA-48 compatibility in mind, but I intend to make it work with DRM or framebuffer, too. Maybe give it a safety mode, to execve /bin/sh.

I'm still working on it, but my VMs where broken for few weeks, and I just fixed my system, so I'll be able to fix the issues when it's used as a daemon now.
One important thing is, it never allocates memory when it enters it's main loop. I can't prove it, but it should never fail (well... I have some improvements to do here, based on reading of s6 code).
In short, I try to make it a very reliable tool.