Edit gettext .po files within WordPress.
Simple Yearly Archive is a rather neat and simple WordPress plugin that allows you to display your archives in a year-based list.
Translate your WordPress site in context and launch localized versions of your website the quick and easy way.
Replace the default words in the core, plugins and themes
Escapes translated text before it gets output. This adds an extra security layer around translated text.
Translate WordPress plugins and themes directly in your browser
Customize WordPress login page easily according to your theme or any other custom style with Custom Login Page Styler.
WP Custom Login Page allows you to change your unlimited custom logo,unlimited custom text,unlimited custom color etc. with its lots of features.
Boost WordPress performance: Faster localization, (on the fly) dynamic image resizing and CDN support for images.
Run localized WordPress sites easily. Select the language and everything else happens automatically.
Quick Localisation allows site admins to patch WordPress translations of any theme and any plugin without leaving the control panel
Diagnose a server's capabilities to use the native gettext extension for translations.
This plugin can easily override the translation of WordPress and any other plugin, in order to customize any text of your WP installation.