KH Coder is a free software for quantitative content analysis or text mining. It is also utilized for computational linguistics. You can analyze Japanese, English, French, German, Italian, Portuguese and Spanish text with KH Coder. Also, Chinese language data (simplified, UTF-8) can be anlyzed with the latest alpha version.
Get KH Coder
On Windows: Download the *.exe file and run it to unzip. Then run "kh_coder.exe." You also need Java. On Mac OS X: Instructions here.
If you are new to KH Coder, please take a look at this "Quick Start Tutorial" first.
Supports for languages other than Japanese are relatively new and experimental features. If you find any bugs or typos, please post comments or suggestions at the forum.