cedbv

Don’t Work in WordPress MU. WordPress 3 only. 
Usefull only if you have a multisite install and if some users manages more than one blog.
This plugin adds a simple dropdown menu in administration header that allows you (and every site users) to switch 
between administration of every site they are member of (and so work for super-admin, admin, contributors,…).
Work best if the plugin is Network Activate.

Multisite Switcher

In a multisite configuration, add a dropdown menu in administration to let you switch between sites admin.

Tom Lynch

Switch Theme allows WordPress Network Administrators to switch all the themes on their WordPress installation to a different theme in only a few clicks.
This is particularly useful if you have large network of blogs which you wish to switch to a new version of your theme.
If you find this plugin useful please <a href="http://supportus.cancerresearchuk.org/donate/" rel="nofollow ugc">donate to Cancer Research UK</a>, and let me know what think you via <a href="http://tomlynch.co.uk" rel="nofollow ugc">my website</a>.
Switch Theme is only for use with WordPress installations with multisite enabled, it will not work on standalone installations or WordPress MU.

Switch Theme

Switch Theme allows WordPress Network Administrators to automatically switch all the themes on their WordPress installation to a different theme.

Multisite Switcher vs Switch Theme