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For the purposes of this list, a portable application is software that can be used from portable storage devices such as USB flash drives, digital audio players, PDAs [1] or external hard drives. To be considered for inclusion, an application must be executable on multiple computers from removable storage without installation, and without writing settings or data onto a computer's non-removable storage. This includes modified portable versions of non-portable applications.
Visual maps of free space and biggest files and folders on hard drive.