Kotoba is a simple aid for increasing your Japanese vocabulary. It is based on the not so unconvential idea that increased exposure to words will help consolidate your memory of them. The implementation of this idea is by repeatedly showing words in a small window that you can keep visible in the background while you work on your stuff.
The program can be set to show the kanji first, then the kana reading, and the translation and any possible comments, or vice versa. Words can be displayed manually, using navigation buttons or the arrow keys, or automatically via an adjustable timer. Multiple dictionaries can be created and edited. Editing is very flexible as Kotoba supports drag-and-drop, searching, as well as import and export of text files.