IDA - The best-of-breed binary code analysis tool, an indispensable item in the toolbox of world-class software analysts, reverse engineers, malware analyst and cybersecurity professionals.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
Okteta - Okteta is a simple editor for the raw data of files.
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.