Kanji code converter

 ACK is a highly versatile Kanji code checker/converter. ACK can do
 reciprocal conversion among Japanese EUC, Shift-JIS and 7bit JIS.
 JIS Kata-kana(SJIS Han-kaku Kana) is also supported. Kanji code can
 be automatically detected even if the input stream contains Kata-kana
 characters. Besides, ACK can be used as a Kanji code checker with
 very high detection rate.