hazardcell

A newer version for WP3.0 is in the works. I would have loved to release it on time for the release of 3.0 but I’m having my finals at the moment so it will have to wait until June 2010. Will include single sign-on as well.
This plugin is for WordPress MU
This plugin basically allows you to host blogs on multiple domain names while maintaining one main site.
For example, the main site could be example.com but users will also be able to sign up for blogs on example.net, example.org or any other domain name that you choose to add.
<ul>
<li>All the sites will have the same settings</li>
<li>No extra blogs/tables are created for the additional domain names</li>
<li>All blogs will be viewable on the Site Admin blog list</li>
</ul>
Alternatively, if you would like to request a feature and/or report a bug, please visit the <a href="https://wordpress.org/tags/yet-another-multi-site-manager" rel="ugc">forum</a> or the <a href="https://plugins.trac.wordpress.org/browser/yet-another-multi-site-manager/" rel="nofollow ugc">trac repository</a>. You will have to login with your WordPress.org username and password to access these.
<h3>Known Issues/Limitations</h3>
<ul>
<li>Remote login does not work with this version</li>
<li>Only tested with VHOST installs in root directory</li>
</ul>

Yet Another Multi-Site Manager

Allows blogs to be created on multiple domain names while maintaining only one main site for all domain names.

jannesh

The HS Access plugin provide the Super-Admin of a WordPress Multi-Site installation to selectively allow the admins of the member blogs 
access to Plugins. This can be done on a per individual level.

HS Access Plugin

Plugin to enable the Super-Admin of Multi-Site instalations to allow selective access to plugins to the authors/admins of member blogs.

Yet Another Multi-Site Manager vs HS Access Plugin