ISOBuster is most popular for rescuing data from damaged CDs and DVDs. The ability to retrieve lost data, particularly when it has sentimental value, like photos, or business value, like documentation is invaluable.
There is a free version with limited functionality, and a Pro version, which unlocks high-end data recovery tools. However, for most people, the functionality available in the free version is more than enough to recover data from damaged or corrupted disks. ISOBuster supports a wide range of formats and works under all the Windows versions from Windows 2000 to Windows 7.
ISOBuster is a low-cost data recovery option that can restore files you thought were lost forever. It appears to be quite basic, but is very good at data recovery. Most people will find the free functionality more than enough for their needs, which also makes it very cost-effective.