Write Chinese - A demo Java applet that teaches Chinese calligraphy for 75 common characters in both traditional and simplified form. - http://mysite.verizon.net/tomyee3/WriteChinese.htm
ecChinese.com - Offers lessons in which you listen and repeat. - http://www.ecchinese.com/
Chinese Multimedia Tutorial - Short tutorials for learning and speaking Chinese. - http://otal.umd.edu/chintut/
Free Chinese Lessons - Introduction to Mandarin, with sections on pronunciation, reading and writing. - http://www.freechineselessons.com/
Chinese Learning Club - Free online Chinese classes include language (reading and writing), tradition and folk dance, Chinese knotting, Tai-Chi Chuan and Tai-Chi sword. - http://www.ezlearnchinese.com/1stclass.html
Chinese4fun.com - Online sample lessons for learning Chinese, geared toward kids. Part of a larger fee based online course teaching Chinese and Mandarin characters in an interactive format. - http://www.chinese4fun.com/