Description
Thanks to language packs it’s easier than ever before to change the main language of your site. However, in some cases a single locale is not enough. When WordPress can’t find a translation for the active locale, it falls back to the original English strings. That’s a poor user experience for many non-English speakers.
This feature project aims to change that by letting users choose multiple languages for displaying WordPress in. That way you can set some sort of “fallback chain” where WordPress tries to load translations in your preferred order.
Please help us test this plugin and let us know if something is not working as you think it should.
Get Involved
Active development is taking place on GitHub.
If you want to get involved, check out open issues and join the #core-i18n channel on Slack. If you don’t have a Slack account yet, you can sign up at make.wordpress.org/chat/.
Screenshots
The new language section in 'Settings' -> 'General' 
The new language section in your user profile.
Reviews
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Nice plugin
Great plugin
Excellent plugin
Contributors & Developers
“Preferred Languages” is open source software. The following people have contributed to this plugin.
Contributors
“Preferred Languages” has been translated into 21 locales. Thank you to the translators for their contributions.
Translate “Preferred Languages” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
For the plugin’s changelog, please head over to the GitHub repository.