UltraISO - CD image files are easily created with UltraISO.
Basilisk II - Basilisk II is an Open Source 68k Macintosh emulator.
PowerISO - PowerISO is a virtual drive that allows users to encode, burn, mount, and even encrypt CDs, DVDs, and BDs. The software can be downloaded from many platforms and sites online.
Sheepshaver - Home page of the SheepShaver Macintosh emulator
WinCDEmu - WinCDEmu is an open-source CD/DVD/BD emulator.
PCE - PCE is a collection of microcomputer emulators. At the moment it contains three emulators: