Chinese English Center : search in Chinese, English and pinyin
MandarinSpot : search in Chinese, English and pinyin. Pronunciation can be shown as Hanyu Pinyin, Zhuyin Fuhao, etc.
MDBG Dictionary: search for single character and phrase in Chinese only
Nciku Online Dictionary : search in Chinese, English and pinyin
Yellow Bridge Chinese-English talking dictionary : search in Chinese, English and Pinyin; advanced search in radicals, handwriting recognition, etc.
Forvo an audio wiki for word pronunciations. Hosting hundreds of recordings of word pronunciations by native speakers.
Hello World provides games and activities to develop a foreign languages.
Study More Chinese : a social network of Chinese learners. Users can write blogs, share vidoes, photos & start discussions about learning Chinese.
WordSteps is a resource for learning the vocabulary. Select the language then choose a set of vocabulary words in that language.
BBC Languages Chinese ：basic guide to pinyin and characters in multimedia format.
CAPL, Culturally Authentic Pictorial Lexicon, is a project developed by Dr. Michael Shaughnessy at Washington & Jefferson College. The purpose of CAP is to provide images that demonstrate the true meaning and intention of the words in a language.
Chinese character practice website : aimed at helping beginning Chinese learners see the linguistic features of characters.
Langhub.com Chinese Lessons Downloadable video lessons covering vocabulary and useful phrases.
Learning Chinese Online: collects different tools and websites for learning Chinese.
Google News China Edition (simplified Chinese)
Google News Hong Kong Edition (traditional Chinese)
Google News Taiwan Edition (traditional Chinese)