For finding information on a specific language or languages in a specific region of the world, the Linguist List Languages database is an excellent starting point. The database allows you to search for a language information in a number of different ways: by language; by language family name; by Ethnologue code; and geographically, using an interactive world map.
Once you’ve found the language you’re interested, the results show basic information about the langage (Alternate and Dialect Names; Countries Spoken in; Status as a living or extinct language; Language Family), plus links to language-specific information on other linguistics sites such as Ethnologue, ODIN Database (Online Database of Interlinear Text), and the Rosetta Project, as well as all the resources related to the language in the LINGUIST-list database, like this:
Another one of the neat features of the database is that it also keeps track of languages which have become extinct or are in imminent danger of becoming extinct and provides a handy browse list of names, with links to the database for more information on each language.
