mguesser is a standalong part of libudmsearch (a core of mnogo search engine http://mnogosearch.org) which allows to guess text's charset and language.

Guessing is implemented using "N-Gram-Based Text Categorization" technique which is implemented in TextCat language guesser written in Perl (http://www.let.rug.nl/~vannoord/TextCat/). mguesser is significantly faster than TextCat especially on large texts.

This package consist of C written N-gram based algorythms as well as a number of maps for texts in various languages and charsets. Take a look into "maps" directory of this package to check currently supported languages and charsets.