Ethnologue - online database of information about 6,500 languages. Includes alternate names, number of speakers, location, dialects, linguistic affiliation, and other sociolinguistic and demographic data. Formerly the Human-Languages Page. Ask a Linguist - designed to be a place where anyone interested in language or linguistics can ask a question and get the response of a panel of professional linguists. Introduction to Linguistics - contains links to linguistics sites at universities and colleges around the world.
Site includes sample linguistic puzzles.
Margo's Magical Letter Page - summary of research on the alphabet and the word, portions of a phonosemantic dictionary, bibliography of sound symbolism, summary of consonant and phonetic feature meanings. Resources for Studying Human Speech Sounds of the World's Animals - explores the way that different languages represent animal sounds. WordNet - online lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory.