Cheetah Mobile Inc. operates a platform that offer mobile and personal computer (PC) applications for users and global content distribution channels in China. The company's suite of applications optimizes mobile and PC Internet system performance and provides real time protection against known and unknown security threats. Its mobile and PC applications for users include Clean Master, a junk file cleaning, memory boosting, and privacy protection tool for mobile devices; CM Security, an anti-virus and security application for mobile devices; Battery Doctor, a power optimization tool for mobile devices; Cheetah Browser, a safe Web browser for PCs and mobile devices; CM Browser, a mobile browser; CM Launcher, a secure launcher that offers acceleration, secure protection, and stylish wallpapers, as well as automatically organizes mobile phones based on personal behavior; Photo Grid, a photo collage application that allows users to create professional looking collages of photos through an intuitive interface for mobile devices; CM Locker, a lightweight lock screen; and Duba Anti-virus, an Internet security application for PC and mobile devices. The company also offers various products, which include mobile advertising platform that helps customers reach their target audience through its mobile applications; Duba.com personal start page that aggregates online resources and provides users access to their online destinations; Web and mobile games in various genres, such as MMORPGs, first person shooters, action, adventure, sports, puzzle, and children's games; and cloud-based data analytics engines. It serves direct advertisers including mobile application developers, mobile game developers, and e-commerce companies, as well as search engines. The company was formerly known as Kingsoft Internet Software Holdings Limited and changed its name to Cheetah Mobile Inc. in March, 2014. Cheetah Mobile Inc. was incorporated in 2009 and is headquartered in Beijing, China.