Messenger Plus! is available in 22 languages:

Arabic, Simplified Chinese, Traditional Chinese, Danish, Dutch, English, Estonian, Finnish, French, German, Hebrew, Hungarian, Italian, Japanese, Norwegian, Portuguese-Brazil, Portuguese-Portugal, Russian, Spanish, Swedish, Thai, Turkish

Features:

Messenger Plus! generally extends the features of Windows Live Messenger 2009 (9.0) and 2011. Notable features include: A set of text formatting codes similar to BBCode (users without Messenger Plus! still see plain text, and BBCode formatting is preserved), Custom status tags, Running multiple Windows Live Messenger instances with different accounts, Logging events and chat logs as plain text or HTML, with optional encryption, A chat log viewer. Used to browse and search all saved logs, Desktop contacts. Small windows always display a specific contact's information on top, Automatic reply messages, usually activated when you are away from the keyboard, Sound emoticons. Custom sounds can be sent to other Messenger Plus! users, Tabbed chat (all conversations in one window). This feature appeared in Messenger Plus! before Windows Live Messenger 2011 added native tab support, Message locking (Admin mode), Contact cleanup. Shows statistics about the user's contacts and allows removing people who deleted you or people you never contacted, Customizing the Windows Live Messenger interface without requiring users to edit the program's resource files directly, A JScript programming language that allows users to add their own features.

Excerpted from Wikipedia

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