CCleaner – a popular software to clean and optimize the system. The software removes the installed software, finds the necessary files, restores the system work, configures an autorun, etc. CCleaner performs the detailed analysis of the system for the presence of the file garbage and cleans the space from the unnecessary data. The software searches the problems in registry, fixes the system errors and displays the report about the performed work. CCleaner cleans the history of online activity in different browsers and applications.