Dominik Schwind

Adds a language taxonomy to posts, pages and other items.
This will add a URL scheme (Your Blog)/lang/(slug).
There is also a template tag for usage within the loop.
Example:
<pre><code><?php if(function_exists('lt_the_language')): ?>
<?php lt_the_language($post_id); ?>
<?php endif; ?>
</code></pre>

Language Taxonomy

Adds a language taxonomy to posts, pages and other items.

Dennis Ploetner

lucatume

A simple, powerful, and user-friendly plugin that adds multilingual support to your <a href="https://wordpress.org/documentation/article/create-a-network/" rel="ugc">WordPress multisite</a> installation, whether using multiple subdomains or folders. Multisite Language Switcher allows you to effortlessly manage translations for posts, pages, custom post types, categories, tags, and custom taxonomies.
The plugin uses flag icons from <a href="http://famfamfam.com" rel="nofollow ugc">FamFamFam</a>. Thanks to Mark James for his great work. In addition, I would like to thank <a href="https://creativpin.com" rel="nofollow ugc">Jürgen Mayer</a> for creating the plugin’s banner.
Please, don’t forget to <a href="https://wordpress.org/support/plugin/multisite-language-switcher/reviews/" rel="ugc">rate this plugin</a>! 🙂
<h3>Translators</h3>
Thanks to all the translators for their great work.
<ul>
<li>German (de_DE) – <a href="http://lloc.de/" rel="nofollow ugc">Dennis Ploetner</a></li>
<li>Italian (it_IT) – <a href="http://www.freely.de/it/" rel="nofollow ugc">Antonella Cucinelli</a></li>
<li>Dutch (nl_NL) – <a href="http://www.buurtaal.de/" rel="nofollow ugc">Alexandra Kleijn</a></li>
<li>Brazillian Portuguese (pt_BR) – <a href="http://www.coolweb.com.br/" rel="nofollow ugc">Coolweb</a></li>
<li>Spanish (es_ES) – <a href="http://www.ab-weblog.com/en/" rel="nofollow ugc">Andreas Breitschopp</a></li>
<li>French (fr_FR) – <a href="http://www.ab-tools.com/en/" rel="nofollow ugc">Andreas Breitschopp</a></li>
<li>Russian (ru_RU) – <a href="http://j4vk.com/" rel="nofollow ugc">Andrey Vystavkin</a></li>
<li>Ukrainian (uk) – <a href="http://worm.org.ua/" rel="nofollow ugc">Victor Melnichenko</a></li>
<li>Croatian (hr_HR) – <a href="https://github.com/Brankec69" rel="nofollow ugc">Brankec69</a></li>
<li>Romanian (ro_RO) – <a href="http://caveatlector.eu/" rel="nofollow ugc">Armand K</a></li>
<li>Polish (pl_PL) – <a href="http://www.mojito-networks.com/" rel="nofollow ugc">Kamil Frejlich</a></li>
<li>Lithuanian (lt_LT) – Ovidijus Pukys</li>
<li>Catalan (ca_ES) – Joan López</li>
<li>Czech (cs_CZ) – Rastr</li>
<li>Hungarian (hu_HU) – RobiG</li>
<li>Georgian (ka_GE) – <a href="http://www.gwebpro.com/" rel="nofollow ugc">Jas Saran</a></li>
<li>Greek (el) – <a href="http://www.aivazidis.org/" rel="nofollow ugc">Christoforos Aivazidis</a></li>
<li>Serbian (sr_RS) – <a href="http://www.webhostinghub.com/" rel="nofollow ugc">Web Hosting Hub</a></li>
<li>Turkish (tr) – Alican Cakil</li>
<li>Armenian (hy_AM) – Yeghishe Nersisyan</li>
<li>Bengali (bn_BD) – Md. Nazmul Huda</li>
<li>Japanese (ja) – <a href="http://themeboy.com/" rel="nofollow ugc">ThemeBoy</a></li>
<li>Swedish (sv_SE) – <a href="http://www.bernskioldmedia.com/" rel="nofollow ugc">Erik Bernskiold</a></li>
<li>Traditional & Simplified Chinese (zh_CN & zh_TW) – DrBenson</li>
<li>Arabic (ar) – Mohamed Elwan</li>
<li>Norwegian (nb_NO) – Ibrahim Qraiqe</li>
<li>Bulgarian (bg_BG) – <a href="http://www.catblue.net/" rel="nofollow ugc">Vencislav Raev</a></li>
<li>Mexican Spanish (es_MX) – <a href="https://fernandomata.mx/" rel="nofollow ugc">Fernando Mata</a></li>
</ul>
You can translate this plugin on <a href="https://translate.wordpress.org/projects/wp-plugins/multisite-language-switcher/" rel="nofollow ugc">translate.wordpress.org</a>, or if you prefer and have created your language pack, or have an update of an existing one, you can <a href="mailto:re@lloc.de" rel="nofollow ugc">send me</a> your Gettext PO and MO so that I can 
bundle it into the Multisite Language Switcher. You can download the latest POT file 
<a href="https://plugins.svn.wordpress.org/multisite-language-switcher/trunk/languages/default.pot" rel="nofollow ugc">from here</a>.

Multisite Language Switcher

Do I have to add anything else?

Made my life (a lot) easier!

It does exactly what it should

I have been using this plugin in combination with MslsMenu for more than 7 years now. 

For me this is a simple, yet absolutely perfect solution for any multilingual WordPress site. Very easy to use. Easily linking cross-blog pages together without having to worry about any third-party plugin compatibility. 

Its simplicity allows website admins full control over the content of each individual blog. Perfect if not all your blogs offer the exact same content, like country-restricted services such as gift cards or house calls or payment methods.

WordPress MultiSite handles all settings per blog and with MultiSite Language Switcher you can use different date/time formatting, even different email addresses, etc. tailored to the blog's locale. 

Thank you very much for providing the perfect solution, Dennis!

The prefect, simple solution!

A simple, powerful and easy-to-use plugin that will help you to manage multilingual content in a multisite WordPress installation.

Language Taxonomy vs Multisite Language Switcher