HxD - HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and...
Okteta - Okteta is a simple editor for the raw data of files.
WinHex - WinHex hex editor, disk editor, RAM editor. Binary editor for files, disks, and RAM. Download HEX EDITOR. Sector editor. Drive editor.
Hex Fiend - A fast and clever open source HEX editor for Mac OS X.
UltraCompare - UltraCompare is the name of an advanced level of file and folder comparison platform that is loaded with an advanced level of features and functions.
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.