QuickHash Library 

Fast, highly optimized implementation of hash, checksum, HMAC algorithms: MD2,MD4,MD5,SHA-1,SHA-2(256,384,512),RIPEMD(128,160,256,320),PANAMA,TIGER,CRC-32,CRC-16,CRC-CCITT,ADLER32. Allows calculations for files, memory blocks, strings,streaming data.
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axsStrongBox 

axsStrongBox is a COM component which provides secure data encryption (public and private key) using industry standard, strong algorithms. It also provides digital signatures, hashing, GZIP and Base64 capability.
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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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