Maria Oliveira's Language Learning : Conversational Spanish - Self-study Spanish lessons and vocabulary on CDs and audio cassettes. Features downloadable lessons. Free lessons and interactive exercises on web site. Online courses also available.
Native Languages of the Americas - Information and links for dozens of Native American languages from an indigenous language preservation organization.
Stella Online : European Commission Project - EU project designed to teach less spoken EU languages. Offers Danish, English, Spanish and Hungarian eLearning courses with audio dialogues, vocabulary practice, self-testing, 'virtual lectures', and reading texts and information about the country, people and culture.
Lied and Art Song Texts Page Archive - Songs and classical texts in parallel translation for many languages - including English, German, Italian, Dutch, Spanish, and French.
Webster's Multilingual Online Dictionary - Several languages are represented. Webster's also has a small Javascript snippet that you can add to any web page that allows users to double-click on a word to get the definition, or on non-English words to get the English translation.
X-Lingo Language Exchange Community - Find language exchange partners from around the world to practice and improve your language skills. Includes free flashcards.