unclego

Lets you have your backend administration panel in english or any installed language, even if the rest of your blog is translated into another language. Language preferences can be set per user basis in user profile screen.
Tested on MultiSite.
Deals with frontend ajax requests
Notice: 
After release of WordPress 4.7 this plugin is a bit obsolete.
In WordPress 4.7 users are able to select their preferred locale (language) when editing their profile. Plugin add exact same functionality to pre 4.7 WordPress.
I still maintain it for people with outdated WordPress sites. And the plugin is still usefull for sites with outdated plugins that not obey get_user_locale(). 
<a href="https://make.wordpress.org/core/2016/11/07/user-admin-languages-and-locale-switching-in-4-7/" rel="nofollow ugc">More info</a>

Admin Language Per User

a must have for multilingual sites

Switch your backend administration panel in any installed language per user basis.

Peyman Naeimi

This plugin provide you a Google map shortcode to use everywhere of your website. 
You will select your address just with a simple Drag and drop. 
Press BUILD, and you will get the code
Language Support:
<ul>
<li>English</li>
<li>Persian</li>
</ul>
Features:
<ul>
<li>Drag and Drop address selection</li>
<li>Support Pop up message</li>
<li>Custom map Icon</li>
<li>Icon animation</li>
<li>RTL support</li>
</ul>

Simple Google Map Generator

This plugin provide you a Google map shortcode to use everywhere of your website.

Admin Language Per User vs Simple Google Map Generator