Catch22 HexEdit has been discontinued. Similar apps include HxD, which is free. Other options are UltraEdit, YuHex, Hex Fiend and wxHexEditor. There's no shortage of Hex Editors like Catch22 HexEdit, with more than 25 alternatives for Windows, Linux, Mac and Android.
XVI32 is a freeware hex editor. XVI32 has the following main features.
Germany
EU
A hexadecimal low level disk editor with extensive templates for NTFS, FAT and exFAT partitions
WinHex is a hexadecimal editor capable of opening disks, sectors, files (native support for FAT, NTFS, Ext2/3, ReiserFS, Reiser4, UFS, CDFS, UDF) and physical memory (RAM). It can read, write and extract data for a further forensic analysis.
GermanyEU
United States
The Hex Workshop Hex Editor by BreakPoint Software is a complete set of hexadecimal development tools for Microsoft Windows 2000 and later. Hex Workshop combines advanced binary editing and data interpretation with the ease and flexibility of a modern word processor.
United States
HexEdit is a Windows hex editor, user-friendly and reliable with advanced features (full undo, macros, background searches, calculator, full customization, edits huge files).
United Kingdom
Frhed(Free hex editor) is an binary file editor for Windows. It is small but has many advanced features like ability to load big files partially. String replacement, multi-language, and other features.
Bangladesh
PilotEdit Lite is an advanced text and hex editor that supports opening of files larger than 4GB. It offers customizable syntax and keyword highlighting, advanced search and replace operations, HEX mode, column mode, and more.
FileAlyzer is a tool to analyze files, allows a basic analysis of files (showing file properties and file contents in hex dump form) and is able to interpret common file contents like resources structures (like text, graphics, HTML, media and PE).
IrelandEU
BEYE (Binary EYE) is a free, portable, advanced file viewer with built-in editor for binary, hexadecimal and disassembler modes. It contains a highlight AVR/Java/i86-AMD64/ARM-XScale/PPC-64 and other disassembler, full preview of MZ,NE,PE,ELF and other.
You got a binary file and don't know its contents. Or some software creates binary files where you have a specification but don't want to decode them manually.
GermanyEU
