free programs to open any file extension
QuickSFV 2.36
QuickSFV 2.36
QuickSFV allows you to verify the integrity of files you have downloaded using various checksum files including SFV, CRC and CKZ.
Download QuickSFV 2.36

QuickSFV website
File extensions QuickSFV understands
.MD5 MD5 Checksum File
.SFV SFV Checksum File
.CRC Cyclic Redundancy Check Checksum File
.PAR Parity Checksum File
.CKZ CKZ Checksum File