vera is an alternative init daemon supervisor (PID 1) that uses kernel control groups (lightweight containers). Containers allow reliable, foolproof shutdown and termination of started services. Optionally enabling cgroup v2 controllers allows setting various resource limits, like specifying the maximum number of processes, or maximum memory used by each container. vera was developed on Slackware 15.0. It is capable of booting and shutting down a stock installation of Slackware 15.
Finit is a SysV init replacement that starts services in parallel for a fast init. It comes with process supervision similar to that of daemontools and runit. Although the focus is on small and embedded GNU/Linux systems, it's fully functional on standard server and desktop installations. Cookies included.
uselessd is a systemd-208 fork optimized for less resource usage, a leaner DBUS ABI, fewer dependencies and BSD/Linux cross-platform compatibility. It reduces featuritis by constraining unit types and concentrating on system initialization and process supervision. In particular udev gets extracted to support alternative handlers, binary journald logging removed to allow established syslog services for early boot sequences. Some auxiliary reimplementations like systemd-fsck are transferred back t
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