I didn't use textmining tools for Chinese language so far, but I find some information about two of them - maybe it will be useful:

The Stanford Word Segmenter supports Chinese:

http://nlp.stanford.edu/software/segmenter.shtml

There are some plugins to GATE for processing Chinese:

https://gate.ac.uk/sale/tao/splitch15.html

Mine! But not an opencourse.

Try also the following tools. They are usful form many languages including chinese.

Good luck.

http://search.carrot2.org/stable/search

http://opennlp.apache.org/

http://khc.sourceforge.net/en/

 Dear Mr Alexander, could you please give us more information about your tool, especialy its webpage, even if it is not an open source tool.

Thank you.

First a word of warning, my background is in statistical rather than natural language text mining tools - so I'm naturally going to know more about the statistical tools - and I haven't actively worked in software development in the area for over a decade. As far as I can see the Stanford statistical parser [see: http://nlp.stanford.edu/software/lex-parser.shtml] is a good product that has been trained on (the large) Chinese Treebank. It should give you fairly decent results at pulling out the grammatical structure of Chinese sentences. As Grzegorz has already pointed out, Stanford have a good Chinese word segmenter to build upon -- and this is important because of the surprising degree of difficulty automated systems have in finding word boundaries in Chinese. So, have a look at the Stanford statistical parser and see if it does some of what you need.

http://nlp.stanford.edu/software/lex-parser.shtml