| Nippon-package | Japanese Utility Functions and Data |
| eucjp2utf8 | Wrapper of iconv for Japanese encoding |
| hira2kata | Conversion form Katakana to Hiragana |
| hiragana | Conversion form Katakana to Hiragana |
| is.jholiday | Calculate public holidays in Japan |
| JapaneseColors | Find RGB by Japanese color names |
| JapanPrefecturesMap | A simple choropleth map of Japan |
| jdate | Internal objects in the Nippon package |
| jholiday | Calculate public holidays in Japan |
| jis2utf8 | Wrapper of iconv for Japanese encoding |
| jiscolors | Internal objects in the Nippon package |
| jpn.syllabary | Internal objects in the Nippon package |
| jpn.syllabary.add | Internal objects in the Nippon package |
| jyear | Conversion to Japanese year style |
| kakasi | Interface to kakasi |
| kana2roma | Romanization of Japanese |
| kata2hira | Conversion form Katakana to Hiragana |
| katakana | Conversion form Katakana to Hiragana |
| month.name.jp | The Japanese name of months |
| Nippon | Japanese Utility Functions and Data |
| Nippon-internal | Internal objects in the Nippon package |
| nippon.palette | Switch the color palette to JIS colors |
| prefectures | Prefectural names in Japan |
| sjis2utf8 | Wrapper of iconv for Japanese encoding |
| ya.hira2kata | Conversion form Katakana to Hiragana |
| ya.kata2hira | Conversion form Katakana to Hiragana |
| zen2han | Convert Japanese characters from fullwidth (zenkaku) to halfwidth (hankaku) forms |
| zenkaku | Internal objects in the Nippon package |