An increasing number of source texts of interest to researchers are becoming available in electronic format at various sites on the internet. Links to a number of these sites, organized according to language and/or subject (some sites are listed under more than one heading) are provided below. There are also references to specific texts, in particular for unusual languages and unusual texts. Users hoping to make use of them for any type of text analysis should be aware, however, that such public-domain texts may vary widely not only in format, but in quality and reliability as well.
You may also wish to consult the list of major online text collections by language.