Some interesting Tools :

1. Flickr PhotoUploader for Performance 1.2 &
   Addon for Performance 1.3+ (Firefox Extension)
2. Oak Pinyin and OakIME (Firefox Entension)
3. Oak Vocabulary (Firefox Extension)
4. Oak UNCTAD (Firefox Extension)Fetching data from United Nations Conference On Trade And Development,
   only Chinese manual, dedicated to my wife