Isobuster - Low cost utility to recover data from damaged, scratched, or otherwise defective discs.
VSO Inspector - VSO-Inspector is a free add-on to report various information about your hardware configuration.
Wise Data Recovery - Wise Data Recovery is a professional data recovery tool, it helps you quickly recover deleted photos, documents, videos, email, etc. from local drives, external drive, USB drive, SD card, mobile phone and other removable devices.
CDCheck - CDCheck can check each of your CDs and DVDs and indicate which files are corrupted.
UpdraftPlus - UpdraftPlus is a WordPress backup plugin.
Recovery Toolbox for CD - Freeware software for fixing damaged optical disks: CD, DVD, Blu-ray and so on. Recovery Toolbox for CD Free helps to recover data from unreadable CD/DVD/Blu-ray and other optics disks.