Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows

grep - grep is a command-line utility for searching plain-text data sets for lines matching a regular...

iHex - iHex is the premier hex editor and data analysis tool for Mac OS X.

PowerGREP - Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...

HextEdit - HextEdit is a proficient hex editor and disassembler for Mac.

dnGREP - dnGrep allows you to search across files with easy-to-read results.