johanee

On every pageload a localized WordPress site spends a huge amount of time setting up the translation (l10n) object. Startup for a localized site can be almost four times slower than an untranslated one.
This plugin stores the translation object between pageloads so it only has to be created once, resulting in significantly better performance (performance graph included with screenshot).
Plugin supports caching multiple languages (if you use a multi-language plugin).
Available storage: Plain file, APC (Alternative PHP Cache), or SHMOP (Shared Memory)

Cache Translation Object

Substantially increase performance of localized WordPress by caching the translation (l10n) object. Supports multiple languages.

Stu West

This plugin gives WordPress developers easy access to localized country, region, language, currency, time zone, and calendar info from the <a href="http://cldr.unicode.org/" rel="nofollow ugc">Unicode Common Locale Data Repository</a>.
With the plugin active, WordPress developers can access the following for over 100 WordPress locales:
<ul>
<li>Names for countries (and ISO 3166 country codes).</li>
<li>Names for regions (and UN M.49 region codes, plus countries included in each region).</li>
<li>Names for languages (and ISO 639 language codes).</li>
<li>Names and symbols for currencies (and ISO 4317 currency codes).</li>
<li>Names for time zone example cities (and IANA time zone IDs).</li>
<li>Calendar information including the first day of the week in different countries.</li>
<li>Country information including telephone codes, most spoken languages, currency, and population.</li>
</ul>
More information in the <a href="https://automattic.github.io/wp-cldr/class-WP_CLDR.html" rel="nofollow ugc">detailed API documentation</a>.
CLDR is a library of localization data coordinated by Unicode. It emphasizes <a href="http://cldr.unicode.org/translation/country-names" rel="nofollow ugc">common, everyday usage</a> and is available in over 700 language-region locales. It is <a href="http://cldr.unicode.org/index/downloads" rel="nofollow ugc">updated every six months</a> and used by <a href="http://cldr.unicode.org/#TOC-Who-uses-CLDR-" rel="nofollow ugc">all major software systems</a>. CLDR data is licensed under <a href="http://unicode.org/copyright.html#Exhibit1" rel="nofollow ugc">Unicode’s data files and software license</a> which is on <a href="https://www.gnu.org/philosophy/license-list.html#Unicode" rel="nofollow ugc">the list of approved GPLv2 compatible licenses</a>.
Follow along with or contribute to the development of this plugin at https://github.com/Automattic/wp-cldr.

WP CLDR

Gives WordPress developers easy access to localized country, region, language, currency, time zone, and calendar info.

Cache Translation Object vs WP CLDR