C++ STL with UTF-8

Portable Library
http://utfcpp.sourceforge.net/
https://sourceforge.net/projects/utfcpp

Conversion Tool
http://www.gnu.org/software/libiconv/

Articles
http://www.codeproject.com/KB/stl/upgradingstlappstounicode.aspx
http://www.codeproject.com/KB/stl/utf8facet.aspx
http://www.cplusplus.com/forum/beginner/7233/

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Cheers,
Vu