Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
iHex - iHex is the premier hex editor and data analysis tool for Mac OS X.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
HextEdit - HextEdit is a proficient hex editor and disassembler for Mac.
Recoll - Recoll is a desktop full-text search tool. Recoll finds keywords inside documents as well as file names.