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.




Catch22 HexEdit is described as 'HexEdit is a hexadecimal file editor for Microsoft Windows. HexEdit allows the user to view and edit any type of file, no matter what format it is saved in' and is a Hex Editor in the development category. There are more than 25 alternatives to Catch22 HexEdit for a variety of platforms, including Windows, Linux, Mac, BSD and PortableApps.com apps. The best Catch22 HexEdit alternative is HxD, which is free. Other great apps like Catch22 HexEdit are UltraEdit, YuHex, wxHexEditor and 010 Editor.
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.




Hiew (short for Hackers view) is a popular console hex editor for DOS and Windows written by Eugene Suslikov (sen). Amongst its feature set is its ability to view files in text, hex and disassembly mode.






Open Source powerful and flexible Hex-Editor, with multiple colour-schemes that allow easy visual indication of byte-magnitude.


Climacs is an open source Emacs-like text editor written in Common Lisp. It has a good integration with other CLIM-based applications and uses Common Lisp Interface Manager (CLIM) library, called ESA, that provides an Emacs-style user interface, rather than the normal CLIM UI.






DataWorkshop, a flexible, multiplatform binary data editor written in java. Implements power structure definition tool that allows to describe complex data structures inside files using loops and condition.



Free Hex Editor Neo - Fastest Binary File Editing Software for Windows. Large Files Optimized Freeware Hex Editor


BinHex CryPactor, a tiny and portable application that can be used to manipulate binary and hexadecimal strings!



IT-Edit (Integrated Terminal Editor) provide a text editor with syntax highlight, line numbering and with the basics text editing functionalities, a file managing interface and terminals in the same window as the editor.




Replace, insert, delete, copy, and otherwise modify bytes and bits in multiple files. Perform bitwise operations on specified bytes with bitmasks and operators like NOT, AND, OR, XOR. Reverse order of specified bytes and bits. Compute file hashes.



