Polyglot is a language identifier for detecting text documents containing text written in more than one language, and for identifying the languages therein. It is an experimental project. For monolingual language detection, langid.py[1] is a proven off-the-shelf solution. The theoretical motivation behind it is described in a forthcoming TACL paper. A preprint can be obtained by directly contacting the author. Marco Lui <saffsd@gmail.com>, November 2013 [1] https://github.com/saffsd/langid.py