There are 6 repositories under init-system topic.
Horust is a supervisor / init system written in rust and designed to run inside containers.
Website for arguments against systemd and further resources
A minimal init system for containers with pre/post hooks
📝 Kernel module that can be used as a replacement for syslog, logger or logwrapper
Ansible role to set up (the latest or a specific version of) supervisor in Debian-like systems
A modular, high-performance, modern init daemon in C#.
Servicectl is a opinionated process manager that aim to simplify native init systems for developers.
A pair of simple init scripts to run Selenium Grid as Hub or Node server instances.
Minecraft server daemonizer for systemd compatiblity
Demonstration of how you can use tini-static and the distroless base image for go
Demo of Finit (FastInit) in Buildroot
a tool to drop privileges for docker entry-points