A free program for Android, by Tencent Technology Shenzhen Company Ltd..

WeCom is a business communication and office collaboration tool developed by Tencent WeChat Team.

WeCom is an integrated business communication platform based on the open-source product, WeChat. WeCom provides a familiar communication experience like WeChat and also connects with WeChat in an all-around manner. It also offers productivity tools such as Event, Meeting, WeDoc, and WeDrive, and flexible OA apps for effective business communication and management.

This tool has been widely adopted by leading organizations, and some of those are Deppon Express, Bank of China, IKEA, Rainbow, P&G, Changan Automobile, WalMart, Chow Tai Fook, L’Oreal,  Cartier, and PICC.