Computer application software for mobile phones, namely, software for erasing installed caches and residual files, for managing applications and background tasks and for managing user history; Computer application software for tablet computers, namely, software for erasing installed caches and residual files, for managing applications and background tasks and for managing user history; Downloadable software for erasing installed caches and residual files, for managing applications and background tasks and for managing user history; Computer antivirus software; Computer security and privacy software; Software for cooling and preventing overheat of computers and mobile devices; Optimization software for boosting memory capacity, processing speed, and battery consumption of computers and mobile devices; Software for managing and backing up application software installed on computers and mobile devices; Software for optimizing access and system operation of computers and mobile devices; Software for deduplication of photos