It allows you to take a control on resources locked by a system, applications and services. A neat free utility that helps you to unlock files and folders. Mount ISO file with internal virtual drive. >More Detail Create ISO file or BIN file from hard disk files or CD / DVD / BD discs. >More Detail Rip Audio CD to MP3, FLAC, APE, WMA, or BIN files.
These images are usually freely available online.
As an example, most distributions of Linux release ISO images of the installation CDs.
ISO images are mainly used as source files from which to create CDs.