Download of Kotoba! 1.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. Kotoba! for Mac lies within Education Tools, more precisely Languages.
From the developer:
Kotoba! is a multilingual Japanese dictionary for iPhone and iPod touch devices. The dictionary files are embedded in the application so that the dictionary service is available at all times with no additional cost.
Kotoba! was created using the amazing JMdict files from the Electronic Dictionary Research and Development Group based on the work of Jim Breen on the EDICT project.
Use the Japanese keyboard to look-up words in kana/kanji.
You may want to check out more Mac applications, such as Macromedia Extension Manager originale, WordPower Learn Hebrew Vocabulary by InnovativeLanguage.com or SpeechSoundsOnCue, which might be similar to Kotoba!.