FastSum is an extremely fast utility for your files integrity control. It calculates short and strong digests of your data via popular MD5 algorithm to use it as references checksums for ulterior data integrity verification.
FastSum allows rectifying the errors occurring while data transfer. For example: Network transfers, CD-R and DVD burning and much more. It is developed for easy processing of a huge files count and has usable command-line interface. It is an analogue of a famous md5sum Unix platform utility.
The Command-Line Edition comes as freeware.