Longman Japan - Publisher of EFL materials, from children's level to adult. With current list of books. - http://www.longmanjapan.com/
Toyo Keizai - Publishes weekly and monthly magazines and journals, books by top Japanese economists and political scientists, CD-ROM products, and holds professional seminars. - http://www.toyokeizai.co.jp/english/
Shogakukan - Publishes comics, magazines, and books on fine arts, photos, children's books, nonfiction, DVDs, and CD-ROMs. Includes full list of publications. - http://www.shogakukan.co.jp/english/
Magazine House - Large magazine publishing company with a combined circulation of almost 8 million copies per month. Describes publishing market in Japan and gives advertising information. - http://www.magazine.co.jp/english/
Hituzi Syobo - Publisher of books for research. Concentrates on the publication of books on linguistics, Japanese, English, and related topics. - http://www.hituzi.co.jp/hituzi/welcome.html
Tuttle Publishing - An independent publisher of Asian-interest books and maps, and the publisher of English-language books in Japan. - http://www.tuttlepublishing.com/
Kress Publishing - Japanese publisher of books on socio-politics, history, economics, finance, statistics, literature, women's issues, education, transportation, and scientific dictionaries (most books in Japanese). - http://www.kress-jp.com/
Nikkei Business Publications, Inc. - A Nihon Keizai Shinbun Company. Publisher of business and technology information. - http://www.nikkeibp.com/
Shogakukan Online - Provides the most recent information on events and newly-released books, as well as comics, magazines, and children`s picture books. (English/Kanji) - http://skygarden.shogakukan.co.jp/sol/ENGLISH/index.html