Linux/Hex Editor

DHEX

apt:

apt-get install dhex

source:

wget http://www.dettus.net/dhex/dhex_latest.tar.gz
tar -zvxf dhex_latest.tar.gz
cd dhex_*  # cd dhex_0.68
make
sudo make install

wget http://www.dettus.net/dhex/dhex_0.68.tar.gz
tar -zvxf dhex_0.68.tar.gz
cd dhex_0.68
make
sudo make install

site: http://www.dettus.net/dhex/

ref: [1]

VIM

To view in hex:

:%!xxd

You can try converting back to binary, but may add extra new lines: [2] [3]

:%!xxd -r

Bless Hex Editor

apt install bless

Bless Hex Editor is a is a binary (hex) editor and currently provides the following features:

• Efficient editing of large data files and block devices.
• Multilevel undo - redo operations.
• Customizable data views.
• Fast data rendering on screen.
• Multiple tabs.
• Fast find and replace operations.
• A data conversion table.
• Advanced copy/paste capabilities.
• Highlighting of selection pattern matches in the file.
• Plugin based architecture.
• Export of data to text and html (others with plugins).
• Bitwise operations on data.
• A comprehensive user manual.

ref: [4]

hexcurse

sudo apt-get install hexcurse

ref: [5]

ht

sudo apt-get install ht

hte

ref: [6]

xxd

xxd [file]