Pavel

Multilang Perelink is a plugin designed for WordPress multisite installations where each subsite represents a version of the same site in a different language.
The plugin enables interlinking between translations of the same content across different subsites (languages) using a simple language switcher and admin UI.
<h3>Main Features:</h3>
<ul>
<li>Adds a language switcher via shortcode: <code>[multilang_perelink_languages]</code></li>
<li>Provides a settings page under Settings > Multilang Perelink for fine-tuned control.</li>
<li>Allows enabling the language switcher for:
<ul>
<li>The front page</li>
<li>Public post types</li>
<li>Public taxonomies</li>
</ul>
</li>
<li>Adds a UI to connect related posts or terms across subsites for selected types.</li>
<li>Enhances user navigation by seamlessly switching between localized content.</li>
</ul>

Multilang Perelink

Multilang Perelink allows interlinking between translated versions of the same content across different subsites in a WordPress multisite network.

wp-ave.com

Hides language switcher feature from login screens introduced in WordPress 5.9
Features:
<ul>
<li>Simply activate this plugin to hide language switcher feature from login screens introduced in WordPress 5.9</li>
</ul>

Hide Language Switcher

Hides language switcher feature from login screens introduced in WordPress 5.9

Multilang Perelink vs Hide Language Switcher