Vitalii

This plugin can to quickly switch user by click. It is comfortable for develop themes and plugins.
After load page, loading neat closed sidebar from right. By click on arrow it show or hide sidebar. Sidebar is 
displaying all registered WordPress users. By click on user is ajax send user ID to back end where switch user. 
After response is JavaScript reload page with registered new user.
<h3>Why using iBryl Switch User?</h3>
<ol>
<li>Quickly switches user by click.</li>
<li>Doesn’t slow down loading.</li>
</ol>

Plugin Name: iBryl Switch User

This plugin can to quickly switch user by click. It is comfortable for develop themes and plugins.

This is Responsive Web Design Plus (RWD+). 
Users can switch the mobile display and PC display on smartphones.
<a href="https://get.lqd.jp/wp/rwd/" rel="nofollow ugc">Demo</a> – Twenty Seventeen Theme and RWD+. 
Please look at the smartphone. Display switch will be displayed at the bottom of the site. 
Display mode is saved in Cookie.
You can enable / disable on the administration screen. 
You can also check the latest information on <a href="https://lqd.jp/wp/" rel="nofollow ugc">LIQUID PRESS</a>.

Plugin Name: iBryl Switch User vs LIQUID RWD Plus