Darik's Boot and Nuke ("DBAN") is a self-contained boot floppy that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.
For additional information about this software, please see this GROK article: DBAN: LSU Overview
OSFMount supports mounting images of CDs in .ISO format , which can be useful when a particular CD is used.
OSFMount allows you to mount local disk image files (bit-for-bit copies of a disk partition) in Windows with a drive letter. OSFMount also supports the creation of RAM disks, basically a disk mounted into RAM. This generally has a large speed benefit over using a hard disk. As such this is useful with applications requiring high speed disk access, such a database applications, games (such as game cache files) and browsers (cache files).
For additional information regarding this software, please see this GROK article: OSFMount: LSU Overview.