Add New Network Users to the Main Site
Adds every newly registered user to the main site with a role you choose, so members of any subsite also have an account on your hub site.
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.
Hide "My Sites" From Regular Users
Removes the My Sites menu from the toolbar for everyone except super admins, so members of several sites are not distracted by the network structure.
Members-Only Subsites
Makes the subsites you list visible only to logged-in members of that site; everyone else is sent to the login page and non-members see a friendly notice.
Only Logged-In Members Can Create New Sites
Keeps the network's signup form open for new user accounts but only lets people who are already logged in create a site, cutting down on spam sites while staying open to new members.