Network-Wide Dashboard Announcement
Adds an "Announcement" box to Network Admin > Settings; whatever a super admin writes there appears as a dismissible notice on every site's dashboard.
Snippet Library
Multisite snippets for WordPress
Snippets for WordPress Multisite networks: network-wide settings, new site defaults, super admin tools and cross-site tweaks. For network administrators who manage many sites from one install.
Network-Wide Footer Notice
Lets super admins set one line of text in Network Admin > Settings, such as a hosting credit or legal link, that appears in the footer of every site.
Network-Wide Maintenance Mode Switch
Adds a checkbox to Network Admin > Settings that puts every site on the network into maintenance mode at once; super admins can still browse and work normally.
One Analytics Tag for Every Site on the Network
Adds a Google Analytics 4 measurement ID field to Network Admin > Settings and prints the tag on every site, so new sites are tracked automatically.