init.d
Dinit
https://davmac.org/projects/dinit/
service manager, init system.
Dinit is a service manager / supervision system, which can (on Linux) also function as a system manager and init.
Related contents:
Added 5 months ago
tini
https://github.com/krallin/tini
A tiny but valid init for containers. Tini is the simplest init you could think of.
All Tini does is spawn a single child (Tini is meant to be run in a container), and wait for it to exit all the while reaping zombies and performing signal forwarding.