jstar198

Adds an extra panel to the post/page edit page which allows you to enter the META keywords & description for that page in each enabled language. Also adds an optional browser title override (does not affect post title).
Note 1: This plugin requires that <a href="http://www.qianqin.de/qtranslate/" rel="nofollow ugc">qTranslate</a> is installed and activated.
Note 2: This plugin does not work well with <a href="https://wordpress.org/extend/plugins/all-in-one-seo-pack/" rel="ugc">All In One SEO</a> and potentially any other plugin or theme which tries to set your META tags.
<h4>Thanks</h4>
I’d like to thank the following people for their contributions (in chronological order):
<ul>
<li>Victor Berchet — Help with initial localisation; French translation</li>
<li>Benoit Gauthier — autosave bug fix</li>
<li>Filippo Pisano — Italian translation</li>
<li><a href="http://pc.de/" rel="nofollow ugc">Marcis G.</a> — Belorussian translation</li>
<li>Almaz — Russian translation</li>
<li><a href="http://www.heftrucknederland.nl/" rel="nofollow ugc">Renate Kramer</a> — German translation</li>
<li><a href="http://wpwebshop.com/blog/" rel="nofollow ugc">Rene</a> — Dutch translation</li>
<li>banane — Bugs with WordPress 3 compatability.</li>
<li>Alexander of <a href="http://webhostinggeeks.com/" rel="nofollow ugc">Web Hosting Geeks</a> — Romanian translation</li>
<li>Branco Radenovich of <a href="http://webhostingw.com/" rel="nofollow ugc">Web Hosting Watch</a> — Slovakian translation</li>
</ul>

qTranslate META

For users of qTranslate, allows you to set multi-lingual META tags and a <title> override for your posts and pages.

Nikola Nikolov

paiyakdev

This plugin separates the user comments by the language they viewed the article in – this way you avoid duplicate content(which is frowned-upon from search engines) and comments in other languages than the one the current visitor is using(which is generally bad user experience).
You can manually change the language of each comment(and you will have to set it in the begining).
Bulk-editing of the comments language is also available.
The plugin is using comment-meta to specify the language for each comment, so nothing will break if the plugin is deactivated.
It also should work out-of-the-box for all themes that use the comments_template() function to render their comments.
The plugin also fixes an issue of qTranslate. The issue consists in the fact that whenever a user posts a comment(while viewing a post in a language different than the default one), he is redirected back to the post but in the default language and not the language he was reading the post before posting the comment.

qTranslate(-X) Separate Comments

Automatically separate the user comments by the language they viewed the article in.

qTranslate META vs qTranslate(-X) Separate Comments