With thousands of distinct languages in the modern world, it would be impossible to be able to identify them all by simply looking at them in a text document. In cases where it is necessary to know what language a website, text document or file is written in, having a handy deciphering tool would be key. WhatLanguage does just that. Simply put, it's a language detection web service. WhatLanguage's API makes this functionality available to developers who may want to integrate it with other applications or create new applications.