It's another CRC checker. It can store CRCs in a SFV file. A simple click on the SFV files run the files verification.
For example, You can create a SFV for a whole CD or DVD. Next time you copy your CD, you run the SFV files, and QuickSFV will tell you if copied files are good or not.
Website dedicated in (Cisco) ToIP tools made by a great friend. Take a look if your working on Cisco ToIP topics, there is some great free tools such as "JPhone", "NumPlanEditor"