CCleaner Portable stands out as a robust tool for cleaning, optimizing, and maintaining system performance across various platforms. CCleaner Portable, developed by Piriform, offers a portable version of the popular CCleaner software. Unlike its installed counterpart, CCleaner Portable can run directly from a USB drive or any other portable storage device without the need for installation, making it convenient for users who frequently switch between computers or prefer not to clutter their system with additional software.