- IMJ mobile Inc.
- IT CO.,LTD.
- Art Scape CO., LTD.
- Aeria Inc.
- ACCESS CO.,LTD.
- UPS Co.,Ltd.
- amazing Limited
- Altech IT Inc.
- eMbience Inc.
- EAST Co., Ltd.
- Innosys Communication
- eBANK Corporation
- Index Corporation
- e-novate
- Ibaraki University
- Interactive Brains Co.,LTD.
- Intellisync K.K.
- INPROBE Networks, Inc.
- WINLIGHT Corp.
- Webproduce Corporation
- Val Laboratory Corporation
- UTSUNOMIYA UNIVERSITY
- EitaroSoft,inc.
- HI CORPORATION
- Xcraft inc.
- eclipse Co., ltd.
- SNK PLAYMORE CORPORATION
- S-NEO
- G-mode Co., Ltd.
- NEC System Technologies, Ltd.
- NEC Networks & System Integration Corporation
- NHN Japan Corporation
- NTT IT CORPORATION
- NTT DATA CORPORATION
- NTT DoCoMo,Inc.
- NTT Resonant Inc.
- Ehime University
- MSF Co.,Ltd.
- MTI Ltd.
- OPTiM Corporation
- OMIC Corporation.
- OMRON Corporation
- CAPCOM CO.
- ColorZip Japan
- Kyushu University
- Kyoto University
- Kyoto Sangyo University
- QUALCOMM Incorporated
- QUALCOMM CDMA Technologies
- QUALCOMM JAPAN Incorporated
- CrossGames.Inc
- CROOZ
- Keio University
- CAVE CO., LTD.
- Gameloft K.K.
- KDDI CORPORATION
- KDDI R&D Laboratories
- GAMES ARENA Co., Ltd.
- Genki Mobile
- Future University-Hakodate
- Konami Digital Entertainment Co., Ltd.
- CONET SYSTEM PRODUCT Co., Ltd.
- COMNET Corporation
- CYBIRD Co.,Ltd.
- Sun System Development co.,ltd.
- Sun Microsystems K.K.
- JRA SYSTEM SERVICE CO.,LTD.
- Computer Systems Engineering Co.,Ltd
- Seekz.co.,ltd.
- G-Search Limmited
- Signal Talk Corporation
- Systena Corporation
- SHARP CORPRATION
- National Institute of Information and Communications Technology(NICT)
- Simplex Technology, Inc
- Sky Co., LTD.
- SkillUpJapan Corporation.
- Zoo Corporation
- SQUARE ENIX CO., LTD.
- StarGame's Corporation
- SEGA
- General Resource LTD.
- CELSYS, Inc.
- SOAR SYSTEM inc.
- Sonic Powered Co.,Ltd.
- SOFTBANK ITmedia
- SORUN CORPORATION
- Taito Corporation
- The Chugoku Electric Power Co.,Inc.
- University of TSUKUBA
- TSUKUBA University of Technology
- TIS Inc.
- DeNA Co., Ltd.
- TG Information Network Co.,Ltd.
- TDC SOFTWARE ENGINEERING Inc.
- TakeNET
- DNP Information Systems Co., Ltd
- Disney Interactive Studios
- TECMO,LTD.
- Digitalware,Inc.
- Digital Technologies Corporation
- TECHNO OONISHI co,.ltd
- Techfirm,Inc.
- DUAL Corporation
- Teleplan
- TOKYO GAS Co.,LTD.
- Tokyo Technical Consultant Inc.
- Tokyo metropolitan industrial technology research institute
- TOSHIBA CORPORATION
- TOSE SOFTWARE, INC.
- Try Hard Inc.
- TOPPAN PRINTING CO.,LTD.
- DWANGO Co.,Ltd.
- Nagoya Institute of Technology
- Natsume Co., Ltd
- Natsume Solution Co., Ltd
- NANO Media Inc.
- Navi-p.com Corporation
- NIPPON ACTY SYSTEMS CO.,LTD
- NIPPON ICHI SOFTWARE INC.
- NIPPON SYSTEMWARE CO.,LTD.
- NEC Corporation
- NTT Corporation
- JTC
- JAPAN PREPAID Corporation
- NinjaStudio Limited
- NEXT-SYSTEM Co.,Ltd.
- Nomura Research Institute, Ltd.
- HAW International Inc.
- PAON CORPORATION
- Panasonic Corporation
- B.U.G., Inc.
- VISUALIZE Co.,Ltd
- Hitachi Government & Public Corporation System Engineering, Ltd.
- Hitachi, Ltd.
- Hitachi Business Solution Co.,Ltd.
- Hitachi Building Systems Co,. Ltd.
- Systems Development Laboratory, Hitachi Ltd.
- V-Sync Co.,Ltd.
- Faith, Inc.
- FeliCa Networks, Inc.
- FUJI PHOTO FILM CO.,LTD.
- FUJI SOFT ABC INCORPORATED
- Fujitsu Limited
- Fujitsu Laboratories of America, Inc.
- Fujitsu Shikoku Systems Limited
- FUJITSU BROAD SOLUTION & CONSULTING Inc.
- Brizo-Interactive Co.,ltd.
- PLATO CORP.
- FromSoftware, Inc.
- BROAD GAME CO., LTD.
- BestAbility Cp.,LTD
- HOPEMOON
- hottolink, Inc.
- Bottle Cube
- Panasonic Mobile & System Engineering Co., Ltd.
- Mighty Craft Co.
- Matsue National College of Technology
- Matsushita Electric Industrial Co., Ltd.
- mixi, Inc.
- Mitsubishi UFJ NICOS Co., Ltd.
- MIRAISHONEN
- MEIDENSHA CORPORATION
- MEDEC Co.,Ltd
- MOSS LTD.
- Mobile Internet Technolog Co., Ltd.
- Val Laboratory Corporation
- Monstar Lab Inc.
- YAMASA CO.,LTD.
- UNIQA, Inc.
- UNIVERSAL ENTERTAINMENT
- RealNetworks
- Living Mobile Czech, s.r.o.
- Lunacraft Corporation
- etc.