scribu

AppThemes

With this plugin, super-admins can:
<ul>
<li>view any theme on any site, without enabling it</li>
<li>access any site through Admin Bar -> My Sites, without having a role on it</li>
</ul>
Intended for <a href="http://scribu.net/wordpress/the-future-of-multisite.html" rel="nofollow ugc">small Multisite installs</a>.

Hyper Admins

Simplify administration tasks for super-admins.

Vikas Jhajhria

Rohit Choudhary

This plugin creates a duplicate copy of you selected theme.

Theme Duplicator

Theme Duplicator is awesome and user-friendly plugin to create copy of any theme.

This is awesome plugin to create copy of any theme

Works perfectly for copying any theme. It’s really a great and helpful plugin.

A required plugin for Developers

This plugin creates a duplicate copy of you selected theme.

Hyper Admins vs Theme Duplicator