WinCDEmu - WinCDEmu is an open-source CD/DVD/BD emulator.
CDCheck - CDCheck can check each of your CDs and DVDs and indicate which files are corrupted.
DAEMON Tools - The most personal application for disc imaging yet.
Isobuster - Low cost utility to recover data from damaged, scratched, or otherwise defective discs.
UltraISO - CD image files are easily created with UltraISO.
Nero InfoTool - A tool to show detailed information about CD/DVD drive capabilities, as well as disc details.