Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Linux
OpenRC is a dependency-based init system that works with the system provided init program, normally /sbin/init. It is not a replacement for /sbin/init. OpenRC is 100% compatible with Gentoo init scripts, which means you can probably find one for the daemons you want to start in...
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.

The Sysvinit package contains programs for controlling the startup, running, and shutdown of the system.
Chaperone is a lightweight alternative to process environment managers like systemd or upstart. Chaperone provides an extensive feature set, including dependency-based startup, syslog logging, zombie harvesting, and job scheduling.
Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems.



procd is a 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...