1)   Hexprobe Hex Editor 2.41
A professional hex editor designed to include all the power to deal with hex data, particularly helpful in the areas of hex-byte editing, byte-pattern analysis, for example: IT security.
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 2)   Hpmbcalc Hex Calculator 3.32
A programmable multiple-precision hex calculator with many utilities. With it, you can easily perform a lot of big number math and encryption operations, such as: square root, modular inverse; hash make; primality test; hex, dec, oct, bin conversion.
hex calculator, hex converter, hash make, crc calculation, encryption calculator, big number calculator, modular calculator, cryptanalysis tool,