slackbuilds/system/biew

BIEW (Binary vIEW) is a free, portable, advanced file viewer with
built-in editor for binary, hexadecimal and disassembler modes.
It contains a highlight PentiumIV/K7-Athlon/Cyrix-M2 disassembler,
full preview of MZ, NE, PE, LE, LX, DOS.SYS, NLM, ELF, a.out, arch,
coff32, PharLap, rdoff executable formats, a code guider, and lot
of other features, making it invaluable for examining binary code.