Frhed

Frhed is a binary file editor or hex editor for the Microsoft Windows platform. The name is an abbreviation of "FRee Hex EDitor". The C++ source code has been released under the GNU General Public License. It is included on the Open Source Software CD.

[edit] Advanced features

Partially open files
- load, edit and write back only a part of a very large file, e.g. load a 1 MB chunk at the very end of a 650 MB ISO file, change a value and write it back to correct position in the original file
Search for any combination of text and binary data using escape sequences, e.g. <bh:00>txt<wd:1000> searches for a byte with hexadecimal value 0 followed by the text string "txt" followed by a word with decimal value 1000
Apply binary templates for structured information
- describe data in a C-struct-like syntax, then read out the correct data values from the raw binary
- e.g. the template "CHAR c; INT x;" reads and prints a character followed by a 32-bit integer from the current cursor position
Hard disk sector access; however, this feature is currently read-only
Apply cryptographic algorithms to data