systemd - systemd is a replacement for the init daemon for Linux (either System V or BSD-style).

MemberVault - MemberVault is a flexible platform that helps you to create, deliver, and sell your services, courses, memberships, subscriptions, etc.

runit - runit is a cross-platform Unix init scheme with service supervision, a replacement for sysvinit...

Ruzuku - Ridiculously easy online courses

sysvinit - Savannah is a central point for development, distribution and maintenance of free software, both GNU and non-GNU.

Opentute - Opentute helps businesses to effortlessly launch a private eLearning and communication platform to engage teams and clients.