Does not require installation; simply unzip the files and run CCleaner64.exe (for 64-bit systems) or CCleaner.exe (for 32-bit systems) from any folder. Professional vs. Free Portable
Allows you to set the tool to run at specific times (though users often prefer the installed version for scheduled tasks). Security & Usage Tips CCleaner Pro Portable 6.04.10044Microsoft
Patented technology that puts background apps to "sleep" to increase system speed and battery life. Does not require installation; simply unzip the files
Keeps your installed apps up to date to close security vulnerabilities. Does not require installation