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)   HashCalc 2.01
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.
hash, message, digest, checksum, crc, hmac, algorithm, file, data, sum,

 3)   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,

 4)   FSUM 2.51
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.
hash, message, digest, checksum, crc, file, data, sum, 128, bit,

 5)   Fsum Frontend 1.5.5.1
This is a Windows frontend for the fsum command line utility by Slavasoft.
fsum, frontend, free, checksum, message digest, hash, sfv, verification, calculate, checker,

 6)   Numericon 1.0
Numericon invites you to dip into the magic of numbers – and it’s going to be extremely interesting and exciting journey. There are many mysteries and secrets are waiting for the player on the pages of the ancient book.
numericon, game, free game, numbers, number game, sum,

 7)   TimePuter 3.1
TimePuter is a time/date calculator with many related features. Calculate time periods based on the start and final dates along with the sum/difference calculation of the start time/date and input data. Export results Html, xml or txt files.
time, span, period, calculate, calculator, evaluate, evaluator, sum, difference, leap,