runit will start a daemon, and if it exits, restart it. i.e. you have runit sat 'atop' your daemon, as it were. monit checks for things, one of which is 'is th

runit will start a daemon, and if it exits, restart it. i.e. you have runit sat 'atop' your daemon, as it were. monit checks for things, one of which is 'is the daemon running', and can then do things about it. runit to keep things that crash occasionally running and monit to keep an eye on general system health would seem totally sensical to me. (see also s6 which is another runit-like)