Published some programs of Python.

• kaidoku is a sudoku program. Enjoy online sudoku puzzles classified with difficulty level.
• passme is a password management tool with command line or web browzer. It is convenient if you are always working with command line. I am using it to manage about 100 passwords.

Programs for soil hydrologists follow.

• SWRC Fit is cited in more than 100 papers.
• discfit is for calculation of disc permeameter.