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 (simplified), Korean and Russian language data can be analyzed with the latest Alpha release (Version 3).
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 the tutorial first. The above slide version or the detailed version analyzing Anne of Green Gables: part 1 and part 2.
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.