flexostudio

It allow the user to translate static texts as the example: 
echo _l(‘cat’);
see http://www.flexostudio.com/
<h3>How to use</h3>
need to make php file that is located inside the theme, it must be said lang_ (languages ??which will translate as lang_en.php) 
 and contains the following code:
<?php $FL_DICT = array(
<pre><code> 'cat' => 'Katze',
 'dog' => 'Hund',
.............
</code></pre>
);?> 
where ‘cat’ => ‘Katze’ ‘regulations is a word and its translation.
in function.php to add the code: 
<?php if(class_exists(‘flexoLanguage’)){
<pre><code>$f = dirname(__FILE__);

if(!flexoLanguage::is_set_language())
 flexoLanguage::set_language('en');//selected language

flexoLanguage::add_dictionary($f);

function _l($key){
 return flexoLanguage::_($key);
}
</code></pre>
} 
else{ 
 function _l($key){return $key;} 
}?>
and everywhere in the code where you write words you want to have a translation in another language and place: 
_l(‘cat’);

flexo-language

Add another language functionality, that is file based without compressions see: http://www.flexostudio.com/

Amir Helzer

Pierre Sylvestre

David Garcia Watkins

jozik

The plugin allows building multilingual <a href="https://wordpress.org/plugins/buddypress/" rel="ugc">BuddyPress</a> and <a href="https://www.buddyboss.com/" rel="nofollow ugc">BuddyBoss</a> sites with <a href="http://wpml.org/" rel="nofollow ugc">WPML</a>. It works with single-site or multi-site installations. Both the main site and child blogs can run multilingual.
Guest blogs can choose their language and create multilingual contents. Additionally, each guest can choose the admin language individually .
Requirements:
<ul>
<li>WPML 4.5.x or higher. You must enable ‘languages per directories’ or ‘languages per domain’.</li>
</ul>
<h4>Features</h4>
<ul>
<li>Adds language switching to all BuddyPress/BuddyBoss pages (Activity, Groups, Profile and Register page)</li>
<li>Allows to select the language when viewing user profiles</li>
<li>Keeps the language consistent when clicking on different links (by adding the language to links)</li>
<li>Allows to translate email notifications</li>
<li>Keeps the entire BuddyPress/BuddyBoss workflow in the current language (create group, change avatars etc.)</li>
</ul>
<h4>Need Support?</h4>
Please submit support requests to <a href="http://wpml.org/forums/forum/english-support/" rel="nofollow ugc">WPML forum</a>. Remember to report:
<ul>
<li>The versions of BuddyPress/BuddyBoss, WPML and WordPress that you’re using.</li>
<li>A URL to your site, where we can see the problem happening.</li>
<li>A description of what you expect to see and what you’re seeing in practice.</li>
</ul>

WPML Multilingual for BuddyPress and BuddyBoss

Thanks for adding support for the BuddyBoss platform in the latest versions.

Keep up the great development work and support!

Added support for the BuddyBoss

The new update is great, it adds the support for BuddyBoss and the ability to translate the email notifications which I long waited for.

Great new update

I really like the latest version of BuddyPress Multilingual. It includes a few great features like translating the email notifications and now we can keep the entire BuddyPress workflow in the current language. 

Also, the language switcher has been added to all BuddyPress pages, including the Activity, Groups, Profile, and Register pages. 

The latest version has some awesome features

WPML Multilingual for BuddyPress and BuddyBoss allows BuddyPress and BuddyBoss sites to run fully multilingual using the WPML plugin.

flexo-language vs WPML Multilingual for BuddyPress and BuddyBoss