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.
PilotEdit - PilotEdit Lite is an advanced text and hex editor that supports opening of files larger than 4GB.
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
HextEdit - HextEdit is a proficient hex editor and disassembler for Mac.
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.