Haskins Laboratories: Yale University's lab for research projects which examine problems found in human spoken and written languages.
Atlas of North American English: From the Telsur Project, a survey of linguistic changes in progress in North American English supported by the National Science Foundation and the National Endowment for the Humanities.
Center for Applied Linguistics: A private, nonprofit organization working to improve communication through better understanding of language and culture.
Ethnologue: Languages of the World: Catalogue of the world's languages from SIL International, a faith-based organization that studies, documents, and assists in developing the world's lesser-known languages.