macbre

This extension has been inspired by http://devel.kostdoktorn.se/cache-translation-object and gives up to 5x speed increase when using WordPress with “custom” (i.e. non English) localisation files.
MO object created by WordPress is cached and stored in the <code>/wp-content/cache/</code> directory and then used when loading localisations.

l10n cache

Improves site performance by providing caching for localisation objects (*.mo files).

Sergey Biryukov

Allows to get Russian translations for your plugins automatically from the <a href="http://code.google.com/p/l10n-ru/" rel="nofollow ugc">l10n-ru</a> project repository.

rurumo

Allows to get Russian translations for your plugins automatically.

l10n cache vs rurumo