information and communications
- Ascendia Inc.
- ITOCHU Techno-Solutions Corporation
- ASC Japan Inc.
- SCSK Corporation
- NTT Communications
- NTT DATA Corporation
- NTT DOCOMO, INC.
- MC2 Co.,Ltd.
- OAS Corporation.
- KDDI CORPORATION,
- SIGMAXYZ Inc,
- JAl CARD,INC.
- Cegedim K.K.
- SoftBank Mobile Corp.
- T&S INFORMATION SYSTEM Ltd.
- TechMatrix Corporation.
- Nihon Unisys, Ltd.
- Nomura Research Institute, Ltd.
- PFU LIMITED
- Hitacgu Systems, Ltd.
- Hitachi, Ltd.
- FUJITSU LIMITED
- Mizuho Information & Research Institute, Inc.
- MITSUI KNOWLEDGE INDUSTRY CO., LTD.
- FELLOW Inc.
- Vext Inc.
- Otsuka Pharmaceutical Co., Ltd.
- Toho Pharmaceutical Co., Ltd.
- Nihon Chouzai Co.,Ltd.
Computer and communications equipment and OA equipment
finance and insurance industry
- DSG Limited
- Tokyo-Mitsubishi UFJ,LT
- Nichii Gakkan Company.
- Hitachi High-Tech Fielding Corporation.
- Kanagawa Prefectural Government
- Tokyo Metropolitan Assembly
- Toshima ward assembly
