Tencent QQ is an Internet-based instant messaging (IM) software developed by Shenzhen Tencent Computer System Co. Tencent QQ supports online chat, video phone, point-to-point intermittent file transfer, *** enjoy files, network hard disk, custom panel, QQ mailbox and other functions. It can also be connected to mobile communication terminals and other communication methods. You can use QQ to contact your friends conveniently, practically and efficiently, and it's all free of charge. Tencent, with its strong technical and financial strength, continues to develop new features and enhance product functionality in an effort to provide better services to QQ users.

In February 1999, Tencent officially launched its first instant messaging software, "Tencent QQ."