systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as PID 1 and starts the rest of the system.
Cost / License
- Free
- Open Source (GPL-2.0)
Platforms
- Linux

procd is described as 'Process and system init service for OpenWRT. It's less resource intensive as it's intended for embedded devices, works with busybox and uClib, hotplug2, libubox and ubus. It watches configuration files to start or restart services and init' and is an app in the os & utilities category. There are more than 10 alternatives to procd for a variety of platforms, including Linux, BSD, FreeBSD, Docker and DragonFly BSD apps. The best procd alternative is systemd, which is both free and Open Source. Other great apps like procd are OpenRC, Launchd, Supervisor and sysvinit.
systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as PID 1 and starts the rest of the system.

a free system array created by Apple inc. For BSD - including macOS as macOS is based on the Darwin kernel of BSD
Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems.



The Sysvinit package contains programs for controlling the startup, running, and shutdown of the system.
hummingbird is an init system designed for speed. It does nothing more than start the system and stop the system by default. There are three main "runlevels", fs which is called directly after the pseudo filesystems necessary for the system to run have been mounted...