paulpascual

Dialekt automatically translates your WordPress website into multiple languages. Simply install the plugin, enter your API key, and your site becomes multilingual.
Features:
<ul>
<li>Automatic translation of all page content</li>
<li>Language selector widget</li>
<li>SEO-friendly URLs with language prefixes (/fr/, /en/, etc.)</li>
<li>No performance impact – translations are cached</li>
</ul>
<h3>External services</h3>
This plugin connects to Dialekt’s translation service to provide automatic website translation functionality. The service is required for the plugin to translate your website content into multiple languages.
What data is sent and when:
The plugin loads a JavaScript file from Dialekt’s CDN (https://cdn.dialekt.io/dialektweb.js) on every page view of your website. This script receives your API key as a data attribute, which is used to identify your account and retrieve translation settings. The script then automatically translates the visible content on your website based on the user’s language preference.
Service information:
This service is provided by Dialekt. For more information, please review our terms of service and privacy policy: 
* Terms of service: https://dialekt.io/terms 
* Privacy policy: https://dialekt.io/terms

Dialekt

Automatic website translation by Dialekt.

A.D.

Sometimes we want the front end of our blog to be translated for the users, but keep the backend admin panel in English. Admin in English with Switch does just that. It lets you switch your backend administration panel to English from admin toolbar, even if the rest of your blog is translated into another language. This plugin allows turning English language on and off for each user’s back-end independently.
For more information about original Admin in English plugin please visit https://wordpress.org/extend/plugins/admin-in-english/ page.

Admin in English with Switch

This plugin is an extended version of Admin in English plugin (v1.2) developed by Nikolay Bachiyski. See the Description for more details.

Dialekt vs Admin in English with Switch