WinCDEmu - WinCDEmu is an open-source CD/DVD/BD emulator.
SoftPerfect RAM Disk - SoftPerfect RAM Disk is a Windows application for creating computer drives entirely stored in memory for better performance and hard disk longevity.
DAEMON Tools - The most personal application for disc imaging yet.
Primo Ramdisk - Primo Ramdisk is the second generation of VSuite Ramdisk product.
Virtual CloneDrive - Virtual CloneDrive works and behaves just like a physical CD/DVD/Blu-ray drive, although it only exists virtually.
PrimoCache - PrimoCache Overview - a supplementary software caching scheme to improve the system performance