Shawn

Say goodbye to the headache of managing users in a multisite network! Now when a user visits a blog in the network, the user will be added to the blog with your specified roles automatically.
Here is how this plugin works:
<ol>
<li>When a user visits a site, this plugin checks if the user is already a member of the site.</li>
<li>If the user is a member, do nothing.</li>
<li>Otherwise add the user to the site with the user\’s role in blog #1, or a role specified by you. [Sync Role]</li>
<li>If the user is not an existing member of blog #1, the user will be added with a role specified by you. [Default Role]</li>
<li>When a user\’s role is updated, the user\’s new role can be updated across all the bogs the user is member of. [Role Update]</li>
</ol>

Multisite User Role Sync

Automatically add users to peer blogs in a multisite network.

FuzzGuard

This plugin allows you to display menu items based on if a user is logged in, logged out or based on the role you have given the user.
This plugin allows fine-grained permissions to be added to each individual menu item to display or not display the item based on the 
 users logged in/logged out status or the role assigned to the user. This solves the problem of having to modify theme functions.php files to add in menu restrictions. The changes in functions.php is often overwritten by a theme update. This plugin removes that worry, as you can update the theme, independent of the plugin.
<h4>Please Note</h4>
This plugin uses a modified version of the Nav Menu Walker class. This means any other plugins that utilize their own custom Nav Menu Walker class, can and will conflict with this plugin. WordPress developers have support for proper custom hooks in this area of the Admin Menu slated for v4.8 release. Please see FAQ item “I cannot see the options for Privilege Menu under menu items in the Admin Panel?” for more information.

Privilege Menu

This plugin allows you to display menu items based on if a user is logged in, logged out or based on the role you have given the user.

Multisite User Role Sync vs Privilege Menu