casefix
a small set of casing tools for use by all
...So the library can modify the casing of any character, character block (word), any character string, character array, or any character stream. Currently, libcasefix only handles 7 or 8 bit character sets with some support for UTF-8. With that in mind casefix does support a number of character sets for internationalization. Also, there is a casefix command that implements the functionality of the casefix library for use at the command line.