Advanced CheckSum Verifier 

Comprehensive SFV and MD5 checksum utility for Windows. The handy and fast utility for protecting the integrity of files. It will allow you to verify the accuracy of your data after you burn a CD or transfer a files over a network.
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Comparator Fast 

Simplifies the comparison / verification / synchronization status of two different directories on any media (local drives, network drives, writable CD's, Compact Flash and electronic media, any drive/disk or device managed as valid windows pathnames)
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HashCalc 

Fast calculator to compute hash, checksum, HMAC values for file, text and hex string. Supports MD2,MD4,MD5, SHA1,SHA2, RIPEMD160,PANAMA,TIGER, CRC32,ADLER32 algorithms and the hash used in eMule/eDonkey(eDonkey2000,ed2k). Good to check/compare files.
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FSUM 

Fast file checksum generation & verification tool. Supports MD2,MD4,MD5, SHA-1,SHA-2, RIPEMD-160,PANAMA,TIGER, CRC-32,ADLER32 algorithms and the hash used in eMule/eDonkey(ed2k). Compatible with md5sum,Easy MD5 Creator,SFV Checker/Verifier,Win CRC32.
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WinHex 

Hex editor, disk editor, and RAM Editor with a lot of features: Concatenating, splitting, unifying, analyzing, and comparing files, flexible search and replace functions, Data Interpreter, template editing, encryption, automation of file editing, ...
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FastCRC Library 

Fast, highly optimized implementation of popular checksum algorithms: CRC32, CRC16, CRC16C (CRC-CCITT). The library allows to calculate checksums for files, memory blocks, strings, streaming data.
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