Selected Website
iin alphabetical order, with brief annotations
http://en.wikipedia.org/wiki/Pinyin
Encyclopedia article on Pinyin romanisation system, etc.
www.ChinesePod.com (also www.EnglishPod.com)
Available free through iTunes and Yahoo Podcasts
www.ChineseMall.com
Seattle warehouse services North America with discount Chinese products
www.clavisinica.com/chartest.html
Chinese Character Test - free
www.clavisinica.com/zika.html
Chinese Flashcards - free
www.hanyu.com.cn/en/htm_newlesson/mulu.htm
Online College of Chinese Language, including character animation of the New Practical Chinese Reader, Book 1.
www.mandarintools.com
Various tools in learning Chinese
www.newsinchinese.com
NewsinChinese.com is powered by a combination of the Adso dictionary and annotation software, and Chinese news agency Xinhua’s RSS Feeds.? The process is entirely automated, and so the site is able to update frequently - there is never more than a 15 minute gap between an article appearing on Xinhua and it being annotated and placed on NewsinChinese.com.?
www.njstar.com
A Windows version word processor software designed for both Chinese and English languages; also an ideal tool for Chinese learning and teaching with powerful dictionary functions.
www.pinyin.info
A guide to the writing of Mandarin Chinese in romanization
www.PinyinPractice.com/wangzhi/
Practice the sounds of Mandarin Chinese
www.powtran.ca
Ultimate Chinese, Lifelong Learning Companion, 604-789-7826
www.purplepanda.com.au/products_and_services/i-HSK/
HSK learning tool, by www.purplepanda.com.au
The software is called i-HSK (or interactive-HSK). Although the software is designed for HSK, we can easily customise it to match any Chinese language curriculum. by
www.Sinoling.com
A collection of resources focusing on Chinese language and culture
www.usc.edu/dept/ealc/chinese/newweb/character_page.html
USC Chinese department website with a list of characters that can be animated, based on Integrated Chinese
Chinese characters and culture; simple Chinese-English dictionary
http://www.mychineseclass.com/mianmian/
For upper-intermediate to advanced Chinese learners; watch them on Youtube free of charge or pay to download them.Topics of the movies include: Chinese heroes, education, status of women, religion/ dating, marriage, adopting child, dinning/ pop-music, business & economy, movies and directors, literature & culture, media & news broadcasting. The movies are good for use with Discussing Everything Chinese , a comprehensive textbook for 3rd or 4th year college students. 
Not Free (but not too expensive, either)
.
www.bethumpd.com
Feilong: The China Game, US$39.95.? A unique game that takes players on a fun-filled journey through China’s 5,000 years of history.
www.cchar.com
Chinese Writing Master 3.0, a Chinese character learning tool, with animation output, stroke order output, etc.