| Established | August 1991 |
| Purpose | To make electronic books (on 8cm CD-ROM) ubiquitous in Japan |
| Chairman | Mr. Hideo Nishikawa (The 21st Century Information Publishing Research Center, ex-Director of Iwanami Shoten Publisher) |
| Activity | To make electronic books ubiquitous in Japan |
| Secretariat | Located within Sony information Technology Company, Ltd. |
| Membership | 122 companies (Membership fees: 150 thousand yen per annum) |
| Products | 300 titles, of which 100 are overseas titles. Besides dictionaries there are a great variety of practical titles such as learner's reference books, guidebooks, and telephone directories. |
| Established | October 1991 (Founded by Iwanami Shoten Publisher, SONY Corp., Dai Nippon Printing, Toppan Printing, and Fujitsu Ltd.) |
| Purpose | To make the EPWING specification prevalent in Japan with the intention of CD-ROM dictionary look-up functionality. |
| Chairman | Mr. Hideki Hasegawa (President of Jiyudenshishuppan Publisher)
Until 1997, Mr. Ryosuke Yasue (then President of Iwanami Shoten Publisher) |
| Activity | The EPWING specification was standardized as JIS-X4081 "the Search-purpose Data Structure for Japanese Electronic Publishing" in 1997. |
| Secretariat | Located within Fujitsu Aprico Ltd. |
| Products | 40 titles: besides manuals and white papers those are mainly dictionary-related products such as 'Kojien' and 'Chiezo'. |
| Membership | 85 companies (Membership fees: for A-class 300 thousand yen per annum, for B-class 50 thousand yen per annum) |
| Established | October 1998 (The phase for demonstrations and experiments lasts until March 2000.) |
| Chairman | Mr. Masatugu Satoh (President of Ohmsha, Ltd.) |
| Chief companies | Shogakukan, Sharp Corp., NTT Ltd., Hitachi Ltd. |
| Purpose | To work on electronic book standards and do promotion activities and proof experiments for "Books-on-Demand" (with a budget of 800 million yen, MITI subsidies being used.) |
| E-book readers | Sharp's hardware (with two 180-dpi LCD screens), etc. |
| Membership | 133 companies (Membership fees: start at 500 thousand yen per annum upward) |
| Products | The budget includes converting existing 5,000 books into electronic books (with an upper limit of 15MB per book). |
| Established | 1998 |
| Chief companies | Fujitsu Ltd. (in charge of the West Hall), Hitachi Ltd. (the East Hall), Dai Nippon Printing, UC Card Co., Ltd. |
| Purpose | With MITI subsidies being available, they do proof experiments. |
| Activity | To enable the user to download content titles and charge the amount on his UC card. (Membership of CyberNet: 15,000 members) To build functionality that allows the user to subscribe in small units such as magazine articles, with a small amount of money like 50 or 100 yen. PDF and other proprietary formats are used as the data formatting options. |
| Membership | 20 or so publishers have joined. |