Isobuster - Low cost utility to recover data from damaged, scratched, or otherwise defective discs.
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.
CDRoller - Recover your valuable data shortly! Recover data from CD, DVD, Blu-Ray discs, flash memory cards with CDRoller - powerful, easy-to-use and low-cost software for CD / DVD / BD / HD-DVD / Flash data recovery
DAEMON Tools - The most personal application for disc imaging yet.
CDCheck - CDCheck can check each of your CDs and DVDs and indicate which files are corrupted.
WinCDEmu - WinCDEmu is an open-source CD/DVD/BD emulator.