Wordiq.com takes information from various sources, such as the free and open source Wikipedia, Websters, Wordnet, and others - and offers a valuable tool for language learners. If you do a search for a language, like French - you can read about the history of the language, dialects, and even grammar and vocabulary. They offer many links to other websites that can help you with whatever topic you are trying to master. Then you can click on their "articles" feature and see recent news involving the language, or "reference" to see listings from various dictionaries.

Some language specific pages from Wordiq.com:

English
Spanish
French
Portuguese
German
Japanese
Chinese
Arabic