Launched by Tencent in February 1999, QQ is an instant messaging (IM) and social platform for PC and mobile users. QQ supports online chat, video and voice calls, point-to-point file transfer, QQ Mail, and many other features. The platform continues to innovate and introduce new features that meet the needs of young users, such as KuoLie enabling users to expand their networks quickly based on their needs and interests. Additionally, Tencent provides TIM (the office version of QQ), which helps improve enterprise efficiency. QQ had more than 768 million monthly active user accounts on smart devices as of March 2020.