1)   FastCRC Library 1.50
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.
checksum, crc, algorithm, file, string, data, block, memory, key, password,

 2)   QuickHash Library 3.0
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.
hash, message, digest, checksum, crc, hmac, algorithm, file, string, data,