webaware

<a href="https://glotpress.trac.wordpress.org/wiki/GlotPress" rel="nofollow ugc">GlotPress</a> is a great free tool for localising your plugins and themes. When translators add new translations to GlotPress, they don’t always tell you. If your GlotPress installation is paired with a WordPress installation, this plugin gives you an easy way to find out what’s waiting for approval:
<ul>
<li>list the projects and languages with strings waiting for approval</li>
<li>subscribe to email notifications for individual projects</li>
</ul>
Admins, validators, and translators can all view strings waiting for approval and receive notification emails. End the guessing game.
<h4>Translations</h4>
Many thanks to the generous efforts of our translators:
<ul>
<li>Dutch (nl-NL) — <a href="https://ribwhost.nl/" rel="nofollow ugc">Sander Keuzenkamp</a></li>
<li>French (fr-FR) — <a href="http://www.eticweb.ca/" rel="nofollow ugc">Hugo Catellier</a></li>
</ul>
If you’d like to help out by translating this plugin, please <a href="https://translate.wordpress.org/projects/wp-plugins/glotpress-notify" rel="nofollow ugc">sign up for an account and dig in</a>. Yes, it’s GlotPress.
<h3>Contributions</h3>
<ul>
<li><a href="https://translate.wordpress.org/projects/wp-plugins/glotpress-notify" rel="nofollow ugc">Translate into your preferred language</a></li>
<li><a href="https://github.com/webaware/glotpress-notify" rel="nofollow ugc">Fork me on GitHub</a></li>
</ul>

GlotPress Notify

notify WordPress users when new GlotPress translations strings are awaiting review

Planet Studio

WPC Simple Translate allows you to translate multilingual WordPress site.
It’s allows you to translate texts in places where other popular plugins usually have difficulty translating and you have to duplicate and keep the same slider, form, gallery, page builders widgets… in different languages.
Easy translate helps you to translate everything despite of themes or plugins specifications.
Currently it is working with Polylang and WPML plugins using plugins just for detecting frontend language.
Features 
Easy to use 
Fully compatible with all themes and plugins 
Ability to translate dynamic strings added by WordPress, plugins and themes. 
You can use as many languages as you want. 
It is easy to use, just put your texts in bellow format

WPC Simple Translate

Displays "Please install WPML or Polylang plugin to start using WPC Simple Translate plugin." and not working without them. Another one dummy plugin decoy for paid and expensive plugins! But idea to separate the same text to different translations is very good.

Not working without other commercial plugins

Translate texts in content, slider, form, gallery, page builders widgets... in different languages.  [:en]Hello[:fr]Bonjour[:]

GlotPress Notify vs WPC Simple Translate