Accenture Japan Ltd.
B.U.G., Inc.
BT Japan Corporation
CSK HOLDINGS CORPORATION
Extreme Networks K.K.
Fuji Xerox Co., Ltd.
FUJITSU LIMITED
Hewlett-Packard Japan, Ltd.
Hitachi, Ltd.
The Japan Research Institute, Limited
Japan Telecom Co., Ltd
KDDI CORPORATION

in alphabetical order, as of January 23, 2006

Matsushita Electric Industrial Co., Ltd.
Microsoft Co., Ltd.
Mizuho Information & Research Institute, Inc.
NEC Corporation
Nomura Research Institute, Ltd.
NTT Communications Corporation
NTT DATA CORPORATION
NTT DoCoMo, Inc.
Oki Electric Industry Co., Ltd.
SAS Institute Japan Ltd.
Sun Microsystems K.K.
Toshiba Corporation
WILLCOM, Inc.