You can also look up for these other topics:
Framework
Coding Standards
Boilerplate
CMS
Tool
Security
Hacktoberfest
Network Media Library plugin for WordPress Multisite
humanmadeA network management interface for global multisite administrators
stuttterWordPress plugin that provides instant switching between user accounts.
johnbillionWordPress Plugin: Multisite Language Switcher
llocEnhance WordPress Multisite for Network Admins with different topics
bueltge