Open Chinese Convert
開放中文轉換

An opensource project for conversion between Traditional Chinese and Simplified Chinese, which supports phrase-level conversion and regional idioms among Mainland China, Taiwan and Hong kong.

中文簡繁轉換開源項目，支持詞彙級别的轉換、異體字轉換和地區習慣用詞轉換（中國大陸、臺灣、香港）。

http://code.google.com/p/opencc/