Nicolas Bouliane

This plugin will display a small ??? icon that links to either the definition or the translation of the word. The plugin is a no-brainer to use: [define:dog] will define the word ?dog? and [en2fr:dog] will translate the word ?dog? from english to french. [wikies:dog] will show the Wikipedia article for the given word in spanish (es). Dictionary.com is used to define words, as it has definitions for technical terms too. Translation works with Google’s translation engine.
For a list of 2-letter language code, see here: http://reference.sitepoint.com/html/lang-codes

Word Definition Links

Inserts subtle links to definitions, Wiki articles and translations of words in multiple languages using short tags.

Fabio Moro

Cambia Utente adds an admin screen that lists the site users and lets an 
administrator log in as any of them with one click. It is handy for support and 
debugging: you can check what a WooCommerce customer actually sees — active 
orders, available downloads, account pages — without asking for their password.
How it works:
<ul>
<li>A top-level Cambia Utente menu (icon: people) is added to wp-admin.</li>
<li>The screen lists users with name and email and an Log in button each.</li>
<li>Clicking a button replaces your session with that user’s session and sends you 
to the site front page as that user.</li>
<li>To go back to your account, log out and log in again as administrator.</li>
</ul>
Security:
<ul>
<li>The screen and the switch action are restricted to users with the <code>edit_users</code> 
capability (administrators), customisable via the <code>cambia_utente_capability</code> filter.</li>
<li>Every switch is protected by a WordPress nonce.</li>
<li>The plugin stores no options, creates no tables and sends no data to external services.</li>
</ul>

Cambia Utente

Log in as another user (e.g. a WooCommerce customer) to verify their access, orders and downloads.

Word Definition Links vs Cambia Utente