This is a simple plugin, it requires that you have multi-site install and properlly configured the WPMUDEV Multi-DB plugin that can be found at https://premium.wpmudev.org/project/multi-db/
Gallery and Widget of images and web pages
Adds a sites field type to ACF. Allows for selection of one or multiple sites in a multisite network.
Easily find the Site Id for Multisite blogs.
One Install, one DB, multiple domains, each with its own theme.
Extends the standard WordPress widgets to be able to run on another blog on the site.
The WordPress Multi Networks Setup plugin allows site owners to create multiple networks based on your WordPress 3.0 network installation.
This plugin lets you add custom site names to be shown in the admin bar menu.
WordPress Plugin - Wp My Admin Bar - Upgrade Your WordPress Adminbar & Menus!
Adds a Networks panel for network admins to create and manage multiple Networks from one WordPress installation.
Show Sites ID's in a network installation.
Enables the creation of a many-to-many relationship between BuddyPress Groups and WordPress Sites in a Multisite context.
Advanced remote posting from a wordpress master site to many wordpress clients using xml-rpc calls
Specify a unique autor description for each individual site in a network.
Securely connect your clients’ sites to the Automattic for Agencies Sites Dashboard. Manage your sites from one place and see what needs attention.
SEO Internal linking (page, post, category). Automatic SEO for website
Launch plugin
wpCentral provides a single-login centralized panel where you can manage tons of your WordPress websites efficiently, unitedly as well as singularly.