Extension:Translate

Features

 * Enables in-wiki localisation, proofreading and exporting of software interface messages (or just about anything)
 * Web-based translation tool which uses AJAX in supported browsers. Off-line tools are also supported.
 * Structured content page translation using the same system as interface translation.
 * Various aids to make the job of translators easier:
 * Display of translations into other languages
 * Collaborative editing of documentation of the use and context of message
 * Translation memory and machine translation with external tools (tmserver, Google, Apertium)
 * Display of changes in the source message
 * Warnings about common mistakes like parameters that are not used.
 * Pre-made modules for various open source products you can use as an example.
 * Versatile plugin system makes it easy to add your own project as a message group.
 * Various statistics (PHPlot needed for graphs)

Installation and configuration

 * See http://translatewiki.net/wiki/Translating:Installation
 * See http://translatewiki.net/wiki/Translating:Configuration

Page translation feature
You can also translate your wiki content with this extension.
 * See http://translatewiki.net/wiki/Translating:Page_translation_feature

More info

 * See http://translatewiki.net/wiki/Translating:Configuration#Troubleshooting
 * Live support at #mediawiki-i18n IRC channel at Freenode

Prominent users

 * http://translatewiki.net – The biggest wiki based open source software interface translation site and community.
 * http://userbase.kde.org – Documentation wiki for KDE project which uses extensively the page translation feature.