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.

James Mehorter

Device Theme Switcher is a WordPress plugin which delivers one of your WordPress themes to handheld visitors and another theme to tablet visitors. Computer visitors are given the active theme in ‘Appearance > Themes’.
<a href="https://github.com/jamesmehorter/device-theme-switcher/wiki/2-Features" rel="nofollow ugc">Features</a> | <a href="https://github.com/jamesmehorter/device-theme-switcher/wiki/3-FAQ" rel="nofollow ugc">FAQ</a> | <a href="https://github.com/jamesmehorter/device-theme-switcher/wiki/4-Contributing" rel="nofollow ugc">Contributing</a> | <a href="https://github.com/jamesmehorter/device-theme-switcher/wiki/5-Changelog" rel="nofollow ugc">Changelog</a>
<h3>Credits</h3>
This plugin’s device detection is powered by the MobileESP PHP library created by Anthony Hand (http://blog.mobileesp.com/).
This plugin is based on the concepts provided by Jonas Vorwerk’s (http://www.jonasvorwerk.com/) Mobile theme switcher plugin, and Jeremy Arntz’s (http://www.jeremyarntz.com/) Mobile Theme Switcher plugin.
Copyright (C) 2017 James Mehorter

Plugin Name: Device Theme Switcher

Assign separate themes for handheld and tablet devices under Appearance > Device Themes

Multisite Switcher vs Plugin Name: Device Theme Switcher