Based on our record, Monit should be more popular than Upstart. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.
I'm only running Monit on my OPNsense box, because it lets you configure some really specific conditions to watch/ trigger notifications for, and that was important for my firewall. It's great, but I wish there was a decent UI like M/Monit, but open source. - Source: Reddit / 5 months ago
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sysvinit - Savannah is a central point for development, distribution and maintenance of free software, both GNU and non-GNU.
s6 - s6 is a small suite of programs for UNIX, designed for process supervision. It can be used as an init system, or as separate supervision components.