Sergey Biryukov

Creates a separate tiny .mo file to use on a site front-end. Allows to save some amount of RAM on a shared hosting server.
Thanks to MAX for the original non-plugin solution and to AlexPTS for the idea.

WPLANG Lite

Creates a separate tiny .mo file to use on a site front-end.

Scott DeLuzio

AMP-MODE

Debug Info will provide you with information on your current WordPress operating environment. This is a helpful tool for you or a developer to use when trying to identify the root cause of an error, or other issue you may experience.
Debug Info provides the following information:
<ul>
<li>
WordPress version currently running on the site
</li>
<li>
Current/active WordPress theme name, theme version, theme author, and theme URI
</li>
<li>
List of active plugins
</li>
<li>
PHP version
</li>
<li>
MySQL version
</li>
<li>
Apache version
</li>
<li>
Full phpinfo() server environment information
</li>
</ul>
Thanks to <a href="http://firstsiteguide.com" rel="nofollow ugc">Ogi Djuraskovic</a> for the Spanish (es_ES) and Serbian (sr_RS) language translations.

Debug Info

A plugin to display your server's PHP info and WordPress environment data for debugging purposes.

WPLANG Lite vs Debug Info