This software generates the MD5 checksum of files. Just drag n' drop. You can also enter a pre calculated checksum to check with the current calculated checksum. Calculating the checksum of huge files will take a lot of time. Hence, a small preventive measure is incorporated. The backend of this gadget is a C program, from RSA Data Security, compiled for 32bit architecture only. This version is the first release on CNET Download.com.