Mahoroba Kobo, Inc.

Prodelight

Brastel Co., Ltd.

Leafnet Co., Ltd.

Sanntsu Telecom Service Corporation

GRANTON Co., Ltd.

KRONOS Co., Ltd.

Link Inc.

Microsoft Japan Co., Ltd.

Softsu Co., Ltd.

Ayucom Co., Ltd.

RingCentral Japan Co., Ltd.

Mitsuiwa K.K.

​Twilio Japan G.K.

Ascend Corporation

Dialpad Japan K.K.

ADJUST ONE

BRISYS Inc.

Zoom Video Communications Inc.

JMS-United Co.,Ltd.

Intermedia Technologies Japan G.K.

KDDI Web Communications Inc.

NEXWAY CO., Ltd.

SoftBank Corp.

Bewith, Inc.

Media4u Inc.

Enjoy Inc.

S and BTS Global KK

​​Umigame Inc. 

BT Japan

Denphone K.K.

​​Cloopen Inc

Tobila Systems Inc.

​​Foonz Co, Ltd

COMSQUARE Co.,Ltd

SBCyberpass Inc.

Collabos Corporation

NEO CORPORATION Co.Ltd.

Infobrain Co., Ltd.

Eligitel Inc.

Vonage Japan G.K.

Cost-Cutting Group Co.Ltd.

SoftBay Inc.

Japan CableCast Inc.

ORIX Corporation

IPS Pro,Inc.

ComDesign Inc

Fine Intelligence Group inc.

WIDSLEY INC.

KIT Network Inc.

Interpark.Co.,Ltd

valueplus co.,Ltd

COMVEX Co., Ltd.

IVRy Inc.

Scene Live Inc.

Tramsystem Co.,Ltd.

TNS Japan K.K.

Wiz.inc

Hi standard, Inc

CCArchitect Inc.

ITALL INC.

Oedo Telecom Inc

CONNECT AGENCY

AINEO Corporation

Alivenet Inc

RevComm Inc.

AudioCodes Japan K.K

LignApps, Inc.

Micware Mobility Co., Ltd.

Good Relations co.,ltd

pickupon Inc.

Dream　Solution　Inc.

WIDETEC Co., Ltd