An editor for editing binary files.
There contents for the file are shown in Hexidecimal, although binary, decimal, octal, and ASCII display modes may also be available.

Windows Hex Editors

Frhed

• http://www.kibria.de/frhed.html
• Opensource - GPL license
• Native 32 bit Windows application: long filenames supported, editable file size limited only by available system memory.
• Small program size (ca. 100K), loads fast.
• Cut, copy & paste binary values.
• Directly enter hexadecimal values or text in main window (overwrite or insert).
• Compare files.
• Find/Replace any combination of text and binary values.
• Bit manipulation.
• many more features

HexIt - The HexEditor

• http://130.236.215.137/hexit.php
• Freeware
• Both MS-DOS and Win32 executables
• Built-in assembler
• Calculator
• Recording and playback of macros
• CodeMode, a realtime disassembler
• Compare two files, both for differences and similarities, backwards and forwards
• TextMode, can view files as a regular textviewer would
• many more features

XVI32

• http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm
• Free
• Edit files up to 2 GB (if resoures available)
• Data Inspector window decodes multibyte numbers, floating point numbers, etc.
• Display of both text (ASCII/ANSI) and hexadecimal representation
• Two synchronous cursors in text and hex area
• Overwrite or insert bytes
• Search and Replace for text or hex strings
• many more features

Linux Hex Editors

KDE

The KDE environment includes a graphical hex editor: KHexEdit

Gnome

The http://www.gnome.org environment includes a graphical hex editor: Bless

HEXEDIT

HEXEDIT is a text mode hex editor included in many Linux distributions. Try man hexedit to see if you have it. HEXEDIT homepage

shed (simple hex editor)

• shed homepage
• Easy to use Pico style interface
• Edits files up to 2Gb
• Displays each byte as ascii, hex, decimal, octal and binary.

Emacs

The Emacs editor includes a hex editing mode.

bvi

Quote from bvi website: The bvi is a display-oriented editor for binary files, based on the vi texteditor. If you are familiar with vi, just start the editor and begin to edit! A bmore programm is also included in the package. If you never heard about vi, maybe bvi is not the best choice for you.

Resources

• Reviews of Free Windows Hex Editors