The thirteenth edition of this massive compendium, edited by Barbara F. Grimes and provided by the Summer Institute of Linguistics, contains links between 6,703 languages and the countries in which they are spoken. Users can look up languages by country, or consult an alphabetic list of languages to see how many people speak them in each country. Also available is the language family index, which groups languages by shared structural and lexical innovations. Language information can also include number of speakers in the world, dialects, linguistic typology, and availability of the Bible. Country information includes the languages spoken, and can also include various demographic and geographic information. The real power of the web site is its hypertext connection between language, country, and language family. Interested users should consult the Introduction before using Ethnologue to understand its components and methodology. The site can be searched from the main countries page.