Cheetah Mobile Inc. operates a platform that offer mission critical applications for its users and global content distribution channels for its business partners in the People's Republic of China. The company's mission critical applications optimize Internet and mobile system performance and provide real time protection against known and unknown security threats. Its mission critical applications include Clean Master, a junk file cleaning, memory boosting, and privacy protection tool for mobile devices; Battery Doctor, a power optimization tool for mobile devices; Duba Anti-virus, an Internet security application for PC and mobile devices; Cheetah Browser, a safe Web browser for PCs and mobile devices; Photo Grid, an easy-to-use photo collage application that allows users to quickly create professional looking collages of photos through an intuitive interface for mobile devices; and Antutu Benchmark, a mobile hardware benchmarking application, which performs CPU, GPU, RAM, and I/O tests for Android devices. The company also offers various platform products for its business partners comprise Duba.com personal start page that aggregates online resources and provides users access to most of their online destinations; publishes Web, client-based, and mobile games in various genres, such as MMORPGs, first person shooters, action, adventure, sports, puzzle, and children's games; Cheetah personalized recommendation engine; and Kingsoft Mobile Assistant, a mobile application store. It serves e-commerce companies and 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, the People's Republic of China. Cheetah Mobile Inc. is a subsidiary of Kingsoft Corporation Limited.